README: give all four screenshots the same 16:10 frame

New hero composite, desktop and phone screenshots rendered from demo
data, highlights, a get-started list, a short FAQ and a clear statement
that PatchDL only fetches official, unmodified updates for games already
on the console. Old photos showing debug output are replaced; the real
home-screen tile photo stays. docs/images/social-preview.png is ready
for the repository's social preview.

.github/release-files.txt

@@ -0,0 +1,6 @@
+# Files included in the release archive.
+# One path per line, relative to the repository root.
+
+patchdl-ps5.elf
+README.md
+LICENSE

.github/workflows/ps5.yml

@@ -0,0 +1,148 @@
+name: PS5 Build and Release
+
+on:
+  push:
+    paths-ignore:
+      - "**/*.md"
+      - "docs/**"
+      - "photos/**"
+  pull_request:
+    paths-ignore:
+      - "**/*.md"
+      - "docs/**"
+      - "photos/**"
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}
+  cancel-in-progress: false
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    outputs:
+      archive_name: ${{ steps.package.outputs.archive_name }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout PatchDL
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Checkout pacbrew-repo
+        uses: actions/checkout@v4
+        with:
+          repository: ps5-payload-dev/pacbrew-repo
+          path: pacbrew-repo
+
+      - name: Checkout SDK stubs
+        uses: actions/checkout@v4
+        with:
+          repository: ps5-payload-dev/sdk
+          path: ps5-sdk
+
+      - name: Setup build environment
+        run: |
+          sudo apt update
+          sudo apt install -y \
+            autoconf \
+            automake \
+            build-essential \
+            clang-18 \
+            cmake \
+            curl \
+            git \
+            libarchive-tools \
+            libtool \
+            lld-18 \
+            makepkg \
+            meson \
+            ninja-build \
+            pacman-package-manager \
+            pkg-config \
+            python3 \
+            zip
+
+      - name: Build and install pacbrew packages
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          build_and_install() {
+            local package_dir="$1"
+            pushd "pacbrew-repo/${package_dir}"
+            makepkg -c -f
+            sudo pacman --noconfirm -U ./ps5-payload-*.pkg.tar.gz
+            popd
+          }
+
+          build_and_install sdk
+          build_and_install libcxx
+          build_and_install zlib
+          build_and_install zstd
+          build_and_install openssl
+          build_and_install libpsl
+          build_and_install curl
+
+      - name: Build payload
+        env:
+          PS5_PAYLOAD_SDK: /opt/ps5-payload-sdk
+          PS5_SCE_STUBS_DIR: ${{ github.workspace }}/ps5-sdk/sce_stubs
+        run: |
+          scripts/build_ps5.sh clean all
+
+      - name: Create release archive
+        id: package
+        shell: bash
+        run: |
+          set -euo pipefail
+          version_tag="$(git describe --abbrev=6 --dirty --always --tags 2>/dev/null || echo "${GITHUB_SHA::7}")"
+          archive_name="PatchDL_${version_tag}.zip"
+          manifest_file=".github/release-files.txt"
+
+          mapfile -t release_files < <(grep -Ev '^[[:space:]]*(#|$)' "${manifest_file}")
+
+          if [ "${#release_files[@]}" -eq 0 ]; then
+            echo "Release manifest is empty: ${manifest_file}" >&2
+            exit 1
+          fi
+
+          for release_file in "${release_files[@]}"; do
+            if [ ! -f "${release_file}" ]; then
+              echo "Missing release file: ${release_file}" >&2
+              exit 1
+            fi
+          done
+
+          zip -9 "${archive_name}" "${release_files[@]}"
+
+          echo "archive_name=${archive_name}" >> "$GITHUB_OUTPUT"
+
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ steps.package.outputs.archive_name }}
+          path: ${{ steps.package.outputs.archive_name }}
+          if-no-files-found: error
+
+  release:
+    needs: build
+    permissions:
+      contents: write
+    if: startsWith(github.ref, 'refs/tags/')
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: ${{ needs.build.outputs.archive_name }}
+          path: dist
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ github.ref_name }}
+          generate_release_notes: true
+          files: dist/${{ needs.build.outputs.archive_name }}

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+ Everyone is permitted to copy and distribute verbatim copies
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+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
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+to collect a royalty for further conveying from those to whom you convey
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+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
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+permission to link or combine any covered work with a work licensed
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+Program specifies that a certain numbered version of the GNU General
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+  17. Interpretation of Sections 15 and 16.
+
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+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

Makefile

@@ -23,7 +23,12 @@ SRCS := src/main.c \
         src/patchdl_resolve.c \
         src/patchdl_verxml.c \
         src/patchdl_install.c \
-        src/patchdl_notify.c
+        src/patchdl_notify.c \
+        src/patchdl_tile.c
+
+# patchdl_tile.c uses .incbin to embed param.json + icon0.png; touching the
+# assets must trigger a rebuild.
+TILE_ASSETS := assets/param.json assets/icon0.png
 
 WEB_ASSETS := web/index.html web/styles.css web/app.js
 GEN_SRCS := $(patsubst web/%,gen/web/%.c,$(WEB_ASSETS))
@@ -56,8 +61,8 @@ gen/web/%.c: web/% scripts/gen_asset_module.py | gen/web
 $(SQLITE_OBJ): $(SQLITE_DIR)/sqlite3.c
 	$(CC) $(SQLITE_CFLAGS) -c -o $@ $<
 
-$(BIN): $(SRCS) $(GEN_SRCS) $(SQLITE_OBJ)
-	$(CC) $(CFLAGS) -o $@ $^ $(LDADD)
+$(BIN): $(SRCS) $(GEN_SRCS) $(SQLITE_OBJ) $(TILE_ASSETS)
+	$(CC) $(CFLAGS) -o $@ $(SRCS) $(GEN_SRCS) $(SQLITE_OBJ) $(LDADD)
 
 test: $(BIN)
 	$(PS5_DEPLOY) -h $(PS5_HOST) -p $(PS5_PORT) $^

README.md

@@ -1,123 +1,123 @@
-# PatchDL
+<h1 align="center">PatchDL</h1>
 
-A standalone PlayStation 5 ELF payload that downloads and installs official game
-patches on your terms. It serves its own dark-mode web UI and runs without
-etaHEN.
+<p align="center">
+  <img src="docs/images/hero.jpg" alt="PatchDL in a desktop browser and on a phone, downloading a game update" width="900">
+</p>
 
-PatchDL is built for setups where nanoDNS blocks Sony's servers for the whole
-console. It resolves the Sony patch CDN on its own DNS path, so the rest of the
-system stays offline and only the patches you pick get fetched.
+<p align="center">
+  <b>Official game updates for your PS5, from any browser.</b><br>
+  PatchDL finds the newest update for every game on your console, downloads it at full speed and installs it.<br>
+  Run it from your phone, your laptop or the PS5 itself.
+</p>
 
-by Knutwurst
+<p align="center">
+  <img src="https://img.shields.io/github/v/release/knutwurst/patchdl?style=for-the-badge&label=release&color=22c55e" alt="Latest release">
+  <img src="https://img.shields.io/github/downloads/knutwurst/patchdl/total?style=for-the-badge&color=22c55e" alt="Downloads">
+  <img src="https://img.shields.io/badge/FW%2011.60-tested-22c55e?style=for-the-badge" alt="Tested on firmware 11.60">
+  <img src="https://img.shields.io/badge/UI-any%20browser-22c55e?style=for-the-badge" alt="Web UI in any browser">
+  <img src="https://img.shields.io/github/license/knutwurst/patchdl?style=for-the-badge&color=3a3a3a" alt="License">
+</p>
 
-## What it does
+<p align="center">
+  <a href="https://github.com/knutwurst/patchdl/releases/latest">
+    <img src="https://img.shields.io/badge/Download-latest%20release-22c55e?style=for-the-badge&logo=github&logoColor=white" alt="Download the latest release" height="42">
+  </a>
+</p>
 
-- Scans installed titles and classifies each: genuine install, ShadowMountPlus
-  mount, preinstall, or unknown.
-- Reads the title name, installed version, and Sony `version.xml` URL from the
-  PS5 app database.
-- Fetches each title's `version.xml` past nanoDNS (a raw DNS query to 1.1.1.1)
-  and verifies TLS against the pinned SCEI DNAS root.
-- Picks the newest patch compatible with the current firmware
-  (`system_ver <= firmware`), so an update never forces a firmware upgrade.
-- Downloads the patch from Sony's manifest pieces into one local `.pkg`, then
-  installs it through Sony's AppInstUtil service.
+---
 
-## Downloading
+## Highlights
 
-PatchDL pulls each patch over a pool of connections instead of one stream, which
-lifts the ~7 MB/s per-connection ceiling on the Sony CDN. Set the connection
-count (1 to 16) in Settings with the stepper; the change applies live, with no
-payload restart. One patch downloads at a time and further requests queue.
+- **Your whole library at a glance.** Every installed game shows up with its version and the newest update Sony offers for it.
+- **Update all.** One click queues every game that has an update. PatchDL works through the queue and installs each update as soon as it lands.
+- **Fast downloads.** Up to 16 parallel connections per update. Change the number in Settings while a download runs.
+- **Survives reboots.** Pause, resume, or lose power: PatchDL saves progress after every finished piece and continues where it stopped.
+- **Made for your firmware.** You only see updates your console can run, so no game ends up asking for newer system software.
+- **Checked against Sony's checksums.** Turn on verification and PatchDL compares every piece with the SHA-256 Sony publishes for it.
+- **A tile on your home screen.** One toggle adds PatchDL to the PS5 home screen. Tap it and the UI opens in the console's browser.
+- **Live progress.** A banner at the top shows the current game, speed, time left and where you are in the queue.
 
-Downloads survive interruptions:
+## Screenshots
 
-- **Resume across a reboot.** PatchDL records progress per manifest piece in a
-  sidecar beside the `.pkg`, written after every completed piece, so a reboot or
-  relaunch continues where it stopped.
-- **Pause, Resume, Cancel.** Pause keeps the partial file, Resume continues it,
-  Cancel deletes it. All three work at any point in a download.
-- **Verification.** Turn on "Verify downloaded pieces (SHA-256)" to check each
-  piece against its manifest hash while downloading. After a download you can
-  also verify the assembled package on-device against Sony's per-piece hashes
-  (`GET /api/pkgverify/<title_id>`).
+<table>
+  <tr>
+    <td align="center" width="50%"><img src="docs/images/games.jpg" width="420" alt="Games view with a running download"><br><sub><b>Games</b> &nbsp;·&nbsp; every game, its version and the update waiting for it</sub></td>
+    <td align="center" width="50%"><img src="docs/images/queue.jpg" width="420" alt="Updating view with two queued updates"><br><sub><b>Updating</b> &nbsp;·&nbsp; the queue, next to the download that's running</sub></td>
+  </tr>
+  <tr>
+    <td align="center" width="50%"><img src="docs/images/settings.jpg" width="420" alt="Settings view"><br><sub><b>Settings</b> &nbsp;·&nbsp; changes apply right away, no restart</sub></td>
+    <td align="center" width="50%"><img src="docs/images/tile-homescreen.jpg" width="420" alt="PatchDL tile on the PS5 home screen"><br><sub><b>Home screen</b> &nbsp;·&nbsp; the PatchDL tile on a real PS5</sub></td>
+  </tr>
+</table>
 
-Patches download to `/data/patchdl` on the internal SSD. Large retail updates
-run tens of GB.
+## Fits any screen
 
-## Safety model
+Start an update from the couch with your phone, check on it from your laptop, or open it on the TV. The UI adapts to whatever screen it's on.
 
-Deny-by-default. A patch installs only for a genuine install, and only when the
-patch metadata targets the installed game:
+<p align="center">
+  <img src="docs/images/phones.jpg" alt="PatchDL on a phone: game list with a download, and Settings" width="560">
+</p>
 
-| Source                | Check | Download | Install |
-|-----------------------|-------|----------|---------|
-| official              | yes   | yes      | yes     |
-| shadowmount           | yes   | yes      | no      |
-| preinstall / unknown  | yes   | no       | no      |
+## Get started
 
-Two guards stop the wrong target being installed: the patch target id (from
-`version.xml` / `manifest_url`) must match the installed game, and the install
-call receives the installed game's content id from app.db. PatchDL refuses a
-true target-title mismatch rather than installing a phantom title.
+1. Download `patchdl_<version>.elf` from the [latest release](https://github.com/knutwurst/patchdl/releases/latest).
+2. Send it to your PS5 with the ELF loader you already use.
+3. A notification on the TV shows the address, for example `http://192.168.0.42:12880/`. Open it in any browser on your network.
+4. Optional: switch on **Home-screen shortcut** in Settings to get the PatchDL tile.
 
-All writes stay under `/data/patchdl`. PatchDL never writes to the system
-partition and never touches firmware.
+**You need** a PS5 that can load ELF payloads. PatchDL is tested on firmware 11.60.
 
-## Settings
+## Good to know
 
-Settings persist to `/data/patchdl/config.json` and survive a restart:
+**Does PatchDL download games?**
+No. It fetches updates for games that are already installed on your console. Nothing else.
 
-- Default policy (allow or deny) and a per-game enable toggle.
-- Install after download, as a global default with a per-game override.
-- Delete the PKG after a successful install.
-- Verify downloaded pieces (SHA-256).
-- Parallel download connections (1 to 16), applied live.
+**Where do the updates come from?**
+From Sony's official update servers, the same files your console downloads on its own. PatchDL only talks to a short list of PlayStation CDN hosts.
 
-## Build
+**Does it change the updates?**
+No. Each package stays exactly as Sony published it, and the console's own installer applies it.
 
-Requires `ps5-payload-dev/sdk`. The network and install features need the
-prebuilt libcurl + OpenSSL from `ps5-payload-dev/pacbrew-repo` in the SDK sysroot
-(`target/user/homebrew`); `scripts/build_ps5.sh` enables them when present.
-libmicrohttpd is vendored under `vendor/etahen`, SQLite under `vendor/sqlite`.
+**Will it touch my system software?**
+No. PatchDL never downloads system software, and it only offers game updates that run on the firmware you have.
+
+**What about disc games?**
+Put the disc in, same as with any update.
+
+**What happens if the power goes out?**
+Start PatchDL again and press Resume. Finished pieces stay on disk.
+
+## Disclaimer
+
+PatchDL is an independent project. It is not affiliated with, endorsed by or sponsored by Sony Interactive Entertainment. "PlayStation" and "PS5" are trademarks of Sony Interactive Entertainment Inc. and appear here only to name the console PatchDL works with.
+
+PatchDL downloads official, unmodified game updates that Sony publishes for games already installed on your console. It does not download games, does not contain or distribute Sony software, keys or game content, and does not install unsigned or modified packages. Use it with games you own, and follow the laws of your country and the terms that apply to you. This project does not support piracy, and issues about pirated content will be closed.
+
+<details>
+<summary><b>Build from source</b></summary>
+
+<br>
 
 ```sh
 scripts/build_ps5.sh        # produces patchdl-ps5.elf
 ```
 
-## Deploy
+You need the [ps5-payload-dev SDK](https://github.com/ps5-payload-dev/sdk) with `libcurl` and `OpenSSL` from its [pacbrew-repo](https://github.com/ps5-payload-dev/pacbrew-repo). `libmicrohttpd` and SQLite are vendored. GitHub Actions builds every push; tagged builds become releases.
 
-This console uses the BD-JB autoloader with itsPLK's Payload Manager on port 8084
-(not a 9021 elfldr). `scripts/deploy_ps5.sh` uploads the version-named ELF and
-launches it; the payload replaces any running instance.
+To try a build on your own console:
 
 ```sh
 PS5_HOST=<console-ip> scripts/deploy_ps5.sh
 ```
 
-On start it shows an on-screen notification with the URL. Open the web UI at:
+</details>
 
-```text
-http://<console-ip>:12880/
-```
+## Credits
 
-## Status
+PatchDL is written in C and builds on [libmicrohttpd](https://www.gnu.org/software/libmicrohttpd/), [libcurl](https://curl.se/), [OpenSSL](https://www.openssl.org/), [SQLite](https://sqlite.org/) and the [ps5-payload-dev SDK](https://github.com/ps5-payload-dev/sdk). Thanks to everyone behind them.
 
-Verified on firmware 11.60: title scan, source classification, version
-resolution past the nanoDNS block, firmware-compatibility filtering, the parallel
-download pool, reboot-safe resume, and on-device SHA-256 verification. A full
-Dead Island 2 update (61.6 GB) downloaded and verified byte-perfect across
-several reboots.
+## License
 
-Install works for same-region patches, where Sony stores the patch bytes under
-the installed game's own title id.
+PatchDL is free software under the **GNU General Public License v3.0 or later**. See [LICENSE](LICENSE). Use it, study it, change it, share it. Forks stay under the same license.
 
-Cross-region patches are a known limitation. Sony sometimes packages a regional
-patch under a different (master) storage title and ships it as a debug-magic
-container. PatchDL downloads such a patch and verifies it against Sony's hashes,
-but the on-console installer (`InstallByPackage`) rejects it on 11.60, and the
-homebrew alternative (BGFT register) returns "not supported" outside the system
-process. Installing that class of patch needs Sony's authenticated updater, which
-nanoDNS blocks. The web UI marks a title "Installing…" and reads progress from the
-PS5's own notifications. Disc games need the disc inserted for their patch to
-apply, which is a normal Sony requirement.
+Copyright © 2026 Knutwurst.

assets/icon0.svg

@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
+  <defs>
+    <linearGradient id="bg" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#0f2a1e"/>
+      <stop offset="1" stop-color="#0a1612"/>
+    </linearGradient>
+    <linearGradient id="badge" x1="0" y1="0" x2="0" y2="1">
+      <stop offset="0" stop-color="#21d07a"/>
+      <stop offset="1" stop-color="#179a59"/>
+    </linearGradient>
+  </defs>
+  <rect width="512" height="512" rx="72" fill="url(#bg)"/>
+  <rect x="56" y="56" width="160" height="160" rx="36" fill="url(#badge)"/>
+  <text x="136" y="178" font-family="Helvetica,Arial,sans-serif" font-size="116"
+        font-weight="800" fill="#0a1612" text-anchor="middle">PD</text>
+  <text x="256" y="346" font-family="Helvetica,Arial,sans-serif" font-size="80"
+        font-weight="700" fill="#e7ecea" text-anchor="middle">PatchDL</text>
+  <text x="256" y="404" font-family="Helvetica,Arial,sans-serif" font-size="32"
+        font-weight="500" fill="#7a8f86" text-anchor="middle">PS5 Patch Tool</text>
+</svg>

assets/param.json

@@ -0,0 +1,10 @@
+{
+    "titleId": "PTDL00001",
+    "deeplinkUri": "http://127.0.0.1:12880/",
+    "localizedParameters": {
+        "defaultLanguage": "en-US",
+        "en-US": {
+            "titleName": "PatchDL"
+        }
+    }
+}

scripts/deploy_ps5.sh

@@ -19,7 +19,7 @@ VERSION=$(sed -n 's/.*PATCHDL_VERSION[^"]*"\([^"]*\)".*/\1/p' "$ROOT_DIR/src/pat
 SRC_ELF="$ROOT_DIR/patchdl-ps5.elf"
 [ -f "$SRC_ELF" ] || { echo "build first: $SRC_ELF missing" >&2; exit 1; }
 
-UP_NAME="patchdl-ps5-v${VERSION}.elf"
+UP_NAME="patchdl_${VERSION}.elf"
 TMP_ELF="$ROOT_DIR/$UP_NAME"
 cp "$SRC_ELF" "$TMP_ELF"
 

src/main.c

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>

src/patchdl_appdb.c

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include "patchdl_appdb.h"
 
 #include <sqlite3.h>
@@ -61,8 +70,12 @@ patchdl_appdb_load(patchdl_appinfo_t **out, size_t *count) {
     *out = NULL;
     *count = 0;
 
+    /* FULLMUTEX: today only the startup thread calls this, but future code
+       paths (a manual rescan triggered from the HTTP thread) would otherwise
+       race the SQLite handle. Cost is one mutex per call. */
     if (sqlite3_open_v2(APP_DB_URI, &db,
-                        SQLITE_OPEN_READONLY | SQLITE_OPEN_URI, NULL) != SQLITE_OK) {
+                        SQLITE_OPEN_READONLY | SQLITE_OPEN_URI |
+                        SQLITE_OPEN_FULLMUTEX, NULL) != SQLITE_OK) {
         if (db) sqlite3_close(db);
         return -1;
     }

src/patchdl_appdb.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 #include <stddef.h>

src/patchdl_assets.c

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include "patchdl_assets.h"
 
 #include <stdlib.h>

src/patchdl_assets.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 #include <stddef.h>

src/patchdl_ca.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 /*

src/patchdl_fw.c

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include "patchdl_fw.h"
 
 #include <ps5/kernel.h>

src/patchdl_fw.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 #include <stdint.h>

src/patchdl_install.c

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include "patchdl_install.h"
 
 #include <arpa/inet.h>
@@ -7,8 +16,11 @@
 
 #include <pthread.h>
 #include <stddef.h>
+#include <stdbool.h>
 #include <stdint.h>
+#include <stdatomic.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
@@ -45,6 +57,42 @@ typedef struct {
     long unknown[810];
 } ai_playgo_info_t;
 
+typedef struct {
+    int32_t error_code;
+    int32_t version;
+    char    description[512];
+    char    type[9];
+} ai_install_error_t;
+
+typedef struct {
+    char               status[16];
+    char               src_type[8];
+    uint32_t           remain_time;
+    uint64_t           downloaded_size;
+    uint64_t           initial_chunk_size;
+    uint64_t           total_size;
+    uint32_t           promote_progress;
+    ai_install_error_t error_info;
+    int32_t            local_copy_percent;
+    bool               is_copy_only;
+    char               _pad[2048]; /* safety margin — actual Sony struct may be larger */
+} ai_install_status_t;
+
+/* Padded buffers for Sony output writes whose actual size is reverse-engineered.
+   The visible content fits in 0x30 (content_id) / 16 (title_id) bytes, but the
+   firmware may NUL-pad or write more. Used as caller-side temporaries that are
+   then copy_bounded()-d into the right-sized destination. */
+#define AI_CONTENTID_OUT_SIZE    256
+#define AI_TITLEID_OUT_SIZE      128
+
+#define STATIC_ASSERT(c, n) typedef char static_assert_##n[(c) ? 1 : -1]
+STATIC_ASSERT(sizeof(ai_pkg_info_t) == 0x38, pkg_info_size);
+STATIC_ASSERT(sizeof(ai_meta_info_t) == (6 * sizeof(void *)), meta_info_size);
+STATIC_ASSERT(sizeof(ai_playgo_info_t) == 0x2700, playgo_info_size);
+STATIC_ASSERT(offsetof(ai_meta_info_t, uri) == 0, meta_uri_offset);
+STATIC_ASSERT(offsetof(ai_meta_info_t, icon_url) == (5 * sizeof(void *)),
+              meta_icon_offset);
+
 /* Sysmodule IDs (from ps5-payload-dev/sdk crt/rtld_sprx.c). */
 #define SYSMOD_IPMI           0x8000001d
 #define SYSMOD_USERSERVICE    0x80000011
@@ -58,12 +106,14 @@ typedef int (*ai_install_by_pkg_fn)(ai_meta_info_t *meta, ai_pkg_info_t *info,
                                     ai_playgo_info_t *playgo);
 typedef int (*ai_title_from_pkg_fn)(const char *path, char *title_id, int *is_app);
 typedef int (*ai_content_from_pkg_fn)(const char *path, char *content_id, int *is_app);
+typedef int (*ai_get_status_fn)(char *content_id_out, ai_install_status_t *status);
 
 static ai_init_fn             ai_initialize;
 static ai_install_pkg_fn      ai_install_pkg;
 static ai_install_by_pkg_fn   ai_install_by_package;
 static ai_title_from_pkg_fn   ai_title_from_pkg;
 static ai_content_from_pkg_fn ai_content_from_pkg;
+static ai_get_status_fn       ai_get_status;
 
 /* Resolve + initialize the AppInstUtil backend WITHOUT linking the sce libs
    (that makes the ELF unloadable by the elfldr) and WITHOUT raw
@@ -72,11 +122,18 @@ static ai_content_from_pkg_fn ai_content_from_pkg;
    symbols via the kernel dynlib helpers. Runs in a detached thread; the HTTP
    handler reports the stage and never blocks.
    stage: 0 idle, 1 resolve loader, 2 load modules, 3 resolve symbols,
-   4 initialize, 5 ready, negative = failure at that step. */
-static volatile int    g_stage;
-static int             g_err;
+   4 initialize, 5 ready, negative = failure at that step.
+   Stored as _Atomic so the worker's release-store and the request handlers'
+   acquire-loads pair properly — the function pointers they read after
+   stage==5 must not be reordered ahead of the stage check. */
+static _Atomic int     g_stage;
+static _Atomic int     g_err;
 static pthread_mutex_t g_mtx = PTHREAD_MUTEX_INITIALIZER;
 static char            g_probe_json[2048]; /* filled by the backend thread */
+static char            g_last_content_id[AI_CONTENTID_SIZE];
+static char            g_last_target_title_id[32];
+static char            g_last_method[32];
+static int             g_last_start_rc;
 
 static intptr_t
 dynsym(const char *module, const char *sym) {
@@ -112,6 +169,63 @@ local_ip(char *out, size_t n) {
     freeifaddrs(ifa);
 }
 
+static void
+copy_bounded(char *dst, size_t dst_sz, const char *src, size_t src_sz) {
+    size_t n;
+    if (!dst || !dst_sz) return;
+    dst[0] = '\0';
+    if (!src || !src_sz) return;
+    for (n = 0; n + 1 < dst_sz && n < src_sz && src[n]; n++)
+        dst[n] = src[n];
+    dst[n] = '\0';
+}
+
+/* Conservative whitelist for ids/filenames that we extract from a local path
+   and inject into URIs/log lines passed to AppInstUtil. Rejects CRLF, '/',
+   '\\', NUL, control chars, anything that could change URI semantics. */
+static int
+install_id_safe(const char *s) {
+    if (!s || !s[0]) return 0;
+    for (const char *p = s; *p; p++) {
+        if (!((*p >= 'A' && *p <= 'Z') ||
+              (*p >= 'a' && *p <= 'z') ||
+              (*p >= '0' && *p <= '9') ||
+              *p == '_' || *p == '-' || *p == '.'))
+            return 0;
+    }
+    return 1;
+}
+
+/* Exact match for PS4/PS5 title ids (9 chars: 4 letters + 5 digits). A bare
+   strncmp(...,9) would also match longer ids that share a 9-char prefix and
+   could collide PPSA12345 with PPSA12345EVIL. */
+static int
+title_id_eq9(const char *a, const char *b) {
+    if (!a || !b) return 0;
+    if (strnlen(a, 16) != 9 || strnlen(b, 16) != 9) return 0;
+    return strncmp(a, b, 9) == 0;
+}
+
+static void
+remember_install(const char *target_title_id, const char *method,
+                 const ai_pkg_info_t *pkg, const char *fallback_content_id,
+                 int rc) {
+    char cid[AI_CONTENTID_SIZE] = {0};
+
+    if (pkg)
+        copy_bounded(cid, sizeof(cid), pkg->content_id, sizeof(pkg->content_id));
+    if (!cid[0] && fallback_content_id)
+        copy_bounded(cid, sizeof(cid), fallback_content_id, strlen(fallback_content_id));
+
+    pthread_mutex_lock(&g_mtx);
+    snprintf(g_last_content_id, sizeof(g_last_content_id), "%s", cid);
+    snprintf(g_last_target_title_id, sizeof(g_last_target_title_id), "%s",
+             target_title_id ? target_title_id : "");
+    snprintf(g_last_method, sizeof(g_last_method), "%s", method ? method : "");
+    g_last_start_rc = rc;
+    pthread_mutex_unlock(&g_mtx);
+}
+
 /* Resolve (dlsym, never call) a list of candidate patch-install symbols and
    record which exist. Runs inside the backend thread, where the AppInstUtil
    module is already loaded — the same proven-safe context as the normal symbol
@@ -126,6 +240,7 @@ fill_probe(void) {
         "sceAppInstUtilInstallByPackageEx",
         "sceAppInstUtilGetTitleIdFromPkg",
         "sceAppInstUtilGetContentIdFromPkg",
+        "sceAppInstUtilGetInstallStatus",
         "sceAppInstUtilAppExist",
         "sceAppInstUtilAppGetInstallStatus",
         "sceAppInstUtilAppInstallStatus",
@@ -209,6 +324,8 @@ backend_init_thread(void *arg) {
                                                          "sceAppInstUtilGetTitleIdFromPkg");
     ai_content_from_pkg   = (ai_content_from_pkg_fn)dynsym("libSceAppInstUtil.sprx",
                                                           "sceAppInstUtilGetContentIdFromPkg");
+    ai_get_status         = (ai_get_status_fn)dynsym("libSceAppInstUtil.sprx",
+                                                     "sceAppInstUtilGetInstallStatus");
 
     /* Read-only feasibility probe — module is loaded, safe context. */
     fill_probe();
@@ -295,7 +412,10 @@ patchdl_install_pkg_meta(const char *local_path, char *content_id, size_t cid_sz
                          char *title_id, size_t tid_sz, int *is_app,
                          char *msg, size_t msg_sz) {
     char        sdk_path[1024];
-    char        cid[64] = {0}, tid[48] = {0};
+    /* Padded output buffers — Sony's GetContentIdFromPkg / GetTitleIdFromPkg
+       take no length hint; firmware may NUL-pad more than the visible id. */
+    char        cid[AI_CONTENTID_OUT_SIZE] = {0};
+    char        tid[AI_TITLEID_OUT_SIZE]   = {0};
     int         app_c = 0, app_t = 0, ok = 0;
     struct stat st;
 
@@ -319,25 +439,134 @@ patchdl_install_pkg_meta(const char *local_path, char *content_id, size_t cid_sz
 
     if (ai_content_from_pkg &&
         ai_content_from_pkg(sdk_path, cid, &app_c) == 0 && cid[0]) {
-        if (content_id && cid_sz) {
-            strncpy(content_id, cid, cid_sz - 1);
-            content_id[cid_sz - 1] = '\0';
-        }
+        copy_bounded(content_id, cid_sz, cid, sizeof(cid));
         if (is_app) *is_app = app_c;
         ok = 1;
     }
     if (ai_title_from_pkg &&
         ai_title_from_pkg(sdk_path, tid, &app_t) == 0 && tid[0]) {
-        if (title_id && tid_sz) {
-            strncpy(title_id, tid, tid_sz - 1);
-            title_id[tid_sz - 1] = '\0';
-        }
+        copy_bounded(title_id, tid_sz, tid, sizeof(tid));
         ok = 1;
     }
     snprintf(msg, msg_sz, ok ? "ok" : "could not read pkg metadata");
     return ok ? 0 : -1;
 }
 
+void
+patchdl_install_debug_state(char *out, size_t out_sz) {
+    char cid[AI_CONTENTID_SIZE];
+    char tid[32], method[32];
+    int  start_rc;
+    int  stage;
+
+    pthread_mutex_lock(&g_mtx);
+    memcpy(cid, g_last_content_id, sizeof(cid));
+    snprintf(tid,    sizeof(tid),    "%s", g_last_target_title_id);
+    snprintf(method, sizeof(method), "%s", g_last_method);
+    start_rc = g_last_start_rc;
+    stage    = g_stage;
+    pthread_mutex_unlock(&g_mtx);
+
+    snprintf(out, out_sz,
+             "{\"stage\":%d,\"cid_len\":%d,\"cid_hex\":\"%02x%02x%02x%02x\","
+             "\"content_id\":\"%s\",\"target_title_id\":\"%s\","
+             "\"method\":\"%s\",\"start_rc\":%d}",
+             stage,
+             (int)strnlen(cid, sizeof(cid)),
+             (unsigned char)cid[0], (unsigned char)cid[1],
+             (unsigned char)cid[2], (unsigned char)cid[3],
+             cid, tid, method, start_rc);
+}
+
+int
+patchdl_install_status_json(char *out, size_t out_sz) {
+    char cid[AI_CONTENTID_SIZE];
+    char tid[32];
+    char method[32];
+    int  start_rc;
+    /* ai_install_status_t carries a 2 KB safety pad; live on the heap so
+       a frequently-polled /api/installstatus doesn't keep committing pages
+       on every MHD worker's stack. */
+    ai_install_status_t *st = NULL;
+    char status[17], src_type[9];
+    int  rc;
+    int  progress = 0;
+    int  terminal = 0;
+
+    if (!out || !out_sz)
+        return -1;
+
+    backend_start();
+
+    pthread_mutex_lock(&g_mtx);
+    snprintf(cid, sizeof(cid), "%s", g_last_content_id);
+    snprintf(tid, sizeof(tid), "%s", g_last_target_title_id);
+    snprintf(method, sizeof(method), "%s", g_last_method);
+    start_rc = g_last_start_rc;
+    pthread_mutex_unlock(&g_mtx);
+
+    if (!cid[0]) {
+        snprintf(out, out_sz, "{\"active\":false}");
+        return -1;
+    }
+    if (g_stage != 5) {
+        snprintf(out, out_sz,
+                 "{\"active\":true,\"content_id\":\"%s\",\"target_title_id\":\"%s\","
+                 "\"method\":\"%s\",\"start_rc\":%d,\"status\":\"backend_not_ready\","
+                 "\"stage\":\"%s\"}",
+                 cid, tid, method, start_rc, stage_str(g_stage));
+        return -1;
+    }
+    if (!ai_get_status) {
+        snprintf(out, out_sz,
+                 "{\"active\":true,\"content_id\":\"%s\",\"target_title_id\":\"%s\","
+                 "\"method\":\"%s\",\"start_rc\":%d,\"status\":\"unavailable\","
+                 "\"message\":\"sceAppInstUtilGetInstallStatus not exported\"}",
+                 cid, tid, method, start_rc);
+        return -1;
+    }
+
+    st = calloc(1, sizeof(*st));
+    if (!st) {
+        snprintf(out, out_sz, "{\"error\":\"oom\"}");
+        return -1;
+    }
+
+    /* sceAppInstUtilGetInstallStatus(char *content_id_out, status_t *status):
+       first arg is an OUTPUT buffer that receives the current install's content_id.
+       Do NOT pass `cid` there — it would be overwritten. The visible id fits in
+       0x30 bytes but Sony's NUL-pad length is unknown; use a padded buffer. */
+    {
+        char ai_cid_out[AI_CONTENTID_OUT_SIZE] = {0};
+        rc = ai_get_status(ai_cid_out, st);
+        (void)ai_cid_out; /* returned content_id for future use */
+    }
+    copy_bounded(status, sizeof(status), st->status, sizeof(st->status));
+    copy_bounded(src_type, sizeof(src_type), st->src_type, sizeof(st->src_type));
+    if (st->total_size > 0)
+        progress = (int)((st->downloaded_size * 100) / st->total_size);
+    if (progress < 0) progress = 0;
+    if (progress > 100) progress = 100;
+    terminal = (!strcmp(status, "playable") ||
+                !strcmp(status, "error") ||
+                !strcmp(status, "none"));
+
+    snprintf(out, out_sz,
+             "{\"active\":true,\"terminal\":%s,\"content_id\":\"%s\","
+             "\"target_title_id\":\"%s\",\"method\":\"%s\",\"start_rc\":%d,"
+             "\"rc\":%d,\"status\":\"%s\",\"src_type\":\"%s\","
+             "\"progress\":%d,\"downloaded_size\":%llu,\"total_size\":%llu,"
+             "\"promote_progress\":%u,\"error_code\":%d}",
+             terminal ? "true" : "false", cid, tid, method, start_rc, rc,
+             status, src_type, progress,
+             (unsigned long long)st->downloaded_size,
+             (unsigned long long)st->total_size,
+             (unsigned)st->promote_progress,
+             (int)st->error_info.error_code);
+    free(st);
+    return rc;
+}
+
 int
 patchdl_install_local_pkg(const char *local_path, const char *expected_title_id,
                           const char *storage_title_id,
@@ -380,15 +609,20 @@ patchdl_install_local_pkg(const char *local_path, const char *expected_title_id,
        such packages to the raw AppInstallPkg path. */
     if (storage_title_id && storage_title_id[0] &&
         expected_title_id && expected_title_id[0] &&
-        strncmp(storage_title_id, expected_title_id, 9) != 0) {
+        !title_id_eq9(storage_title_id, expected_title_id)) {
         pkg_tid_mismatch = 1;
         strncpy(pkg_tid, storage_title_id, sizeof(pkg_tid) - 1);
+        pkg_tid[sizeof(pkg_tid) - 1] = '\0';
     }
     if (ai_title_from_pkg && expected_title_id && expected_title_id[0]) {
+        /* Sony's GetTitleIdFromPkg writes into the output buffer with no length
+           hint — pad generously and copy the safe portion into pkg_tid. */
+        char tid_out[AI_TITLEID_OUT_SIZE] = {0};
         int  is_app = 0;
-        if (ai_title_from_pkg(sdk_path, pkg_tid, &is_app) == 0 && pkg_tid[0] &&
-            strncmp(pkg_tid, expected_title_id, 9) != 0) {
-            pkg_tid_mismatch = 1;
+        if (ai_title_from_pkg(sdk_path, tid_out, &is_app) == 0 && tid_out[0]) {
+            if (!title_id_eq9(tid_out, expected_title_id))
+                pkg_tid_mismatch = 1;
+            copy_bounded(pkg_tid, sizeof(pkg_tid), tid_out, sizeof(tid_out));
         }
     }
     if (pkg_tid_mismatch && (!target_content_id || !target_content_id[0])) {
@@ -397,21 +631,29 @@ patchdl_install_local_pkg(const char *local_path, const char *expected_title_id,
                  pkg_tid, expected_title_id);
         return -1;
     }
-
-    /* Preferred path: InstallByPackage accepts target metadata. Use it first,
-       and use it exclusively when the downloaded bytes report a master/storage
-       title id that differs from the target regional title id. */
+    /* Preferred path: etaHEN's DPI uses InstallByPackage with the installed
+       game's content_id in MetaInfo so AppInstUtil binds the install to the
+       right title slot. For shared-master cross-region packages the pkg bytes
+       carry a different title id than the installed game; passing content_id
+       is what etaHEN does to route the install correctly. */
     {
-        char             file_uri[1100];
-        char             http_loop_uri[1200] = {0};
-        char             http_lan_uri[1200] = {0};
-        const char      *uris[4];
-        ai_meta_info_t   meta   = {0};
-        ai_pkg_info_t    pkg    = {0};
-        ai_playgo_info_t playgo = {0};
-        int              rc2    = -1;
-        const char      *title_dir;
-        const char      *file_base;
+        char              file_uri[1100];
+        char              http_loop_uri[1200] = {0};
+        char              http_lan_uri[1200] = {0};
+        const char       *uris[4];
+        ai_meta_info_t    meta    = {0};
+        ai_pkg_info_t     pkg     = {0};
+        /* playgo is 0x2700 bytes — too big for the MHD worker stack alongside
+           uris, meta, pkg, resp buffers, and Sony's own frame use. */
+        ai_playgo_info_t *playgo  = calloc(1, sizeof(*playgo));
+        int               rc2     = -1;
+        const char       *title_dir;
+        const char       *file_base;
+
+        if (!playgo) {
+            snprintf(msg, msg_sz, "out of memory");
+            return -1;
+        }
 
         snprintf(file_uri, sizeof(file_uri), "file://%s", sdk_path);
         title_dir = strstr(local_path, "/data/patchdl/");
@@ -423,14 +665,19 @@ patchdl_install_local_pkg(const char *local_path, const char *expected_title_id,
             if (tlen > 0 && tlen < sizeof(title_id)) {
                 char ip[INET_ADDRSTRLEN] = {0};
                 memcpy(title_id, t, tlen);
-                snprintf(http_loop_uri, sizeof(http_loop_uri),
-                         "http://127.0.0.1:%d/api/pkg/%s/%s",
-                         PATCHDL_HTTP_PORT, title_id, file_base + 1);
-                local_ip(ip, sizeof(ip));
-                if (ip[0])
-                    snprintf(http_lan_uri, sizeof(http_lan_uri),
-                             "http://%s:%d/api/pkg/%s/%s",
-                             ip, PATCHDL_HTTP_PORT, title_id, file_base + 1);
+                /* CRLF/path-injection guard: anything we splice into the loop /
+                   LAN URI lands inside Sony's HTTP request line. Reject ids
+                   or filenames carrying delimiters or control chars. */
+                if (install_id_safe(title_id) && install_id_safe(file_base + 1)) {
+                    snprintf(http_loop_uri, sizeof(http_loop_uri),
+                             "http://127.0.0.1:%d/api/pkg/%s/%s",
+                             PATCHDL_HTTP_PORT, title_id, file_base + 1);
+                    local_ip(ip, sizeof(ip));
+                    if (ip[0])
+                        snprintf(http_lan_uri, sizeof(http_lan_uri),
+                                 "http://%s:%d/api/pkg/%s/%s",
+                                 ip, PATCHDL_HTTP_PORT, title_id, file_base + 1);
+                }
             }
         }
         uris[0]                 = sdk_path;      /* /user/data/... — the allowlisted path */
@@ -439,7 +686,11 @@ patchdl_install_local_pkg(const char *local_path, const char *expected_title_id,
         uris[3]                 = http_lan_uri[0] ? http_lan_uri : NULL;
         meta.ex_uri             = "";
         meta.playgo_scenario_id = "";
-        meta.content_id         = target_content_id ? target_content_id : "";
+        /* For cross-region shared-master packages pass the installed game's
+           content_id so AppInstUtil binds the download to the right title. */
+        meta.content_id         = (pkg_tid_mismatch &&
+                                    target_content_id && target_content_id[0])
+                                   ? target_content_id : "";
         meta.content_name       = "PatchDL";
         meta.icon_url           = "";
 
@@ -449,43 +700,145 @@ patchdl_install_local_pkg(const char *local_path, const char *expected_title_id,
             for (int i = 0; i < 4; i++) {
                 if (!uris[i]) continue;
                 memset(&pkg, 0, sizeof(pkg));
-                memset(&playgo, 0, sizeof(playgo));
+                memset(playgo, 0, sizeof(*playgo));
                 meta.uri = uris[i];
-                rc2 = ai_install_by_package(&meta, &pkg, &playgo);
+                rc2 = ai_install_by_package(&meta, &pkg, playgo);
                 {
                     size_t l = strlen(tries);
                     snprintf(tries + l, sizeof(tries) - l, "%s%s=0x%08x",
                              l ? "," : "", labels[i], (unsigned)rc2);
                 }
                 if (rc2 == 0) {
-                    snprintf(msg, msg_sz, "install started (InstallByPackage%s)",
-                             pkg_tid_mismatch ? ", shared master bytes" : "");
+                    remember_install(expected_title_id, "InstallByPackage",
+                                     &pkg, target_content_id, rc2);
+                    snprintf(msg, msg_sz, "install started (InstallByPackage, content %.47s)",
+                             pkg.content_id[0] ? pkg.content_id :
+                             (target_content_id ? target_content_id : ""));
+                    free(playgo);
                     return 0;
                 }
             }
             rc = rc2;
-            if (pkg_tid_mismatch) {
-                snprintf(msg, msg_sz,
-                         "install rejected (pkg %.12s -> %.12s; tries: %s)",
-                         pkg_tid, expected_title_id ? expected_title_id : "", tries);
-                return rc ? rc : -1;
-            }
         }
+        free(playgo);
     }
 
-    /* Last resort for normal same-title packages only. This path has no target
-       metadata parameter, so it is intentionally skipped for shared-master
-       region bytes. */
+    /* AppInstallPkg: simpler API, no MetaInfo content_id override. Tried for
+       all packages including cross-region, since it may have different
+       privilege requirements than InstallByPackage. For shared-master packages
+       it will bind to the pkg's own embedded title, not the expected_title_id,
+       so treat success with caution; also report the complete error set. */
     {
+        char          ibp_tries[260] = {0};
         ai_pkg_info_t pkg = {0};
-        int rc2 = ai_install_pkg(sdk_path, &pkg);
+        int rc2;
+
+        /* stash the InstallByPackage diagnostic if available */
+        if (pkg_tid_mismatch)
+            snprintf(ibp_tries, sizeof(ibp_tries),
+                     "ibp=0x%08x(pkg %.12s->%.12s)",
+                     (unsigned)rc, pkg_tid,
+                     expected_title_id ? expected_title_id : "");
+
+        rc2 = ai_install_pkg(sdk_path, &pkg);
         if (rc2 == 0) {
-            snprintf(msg, msg_sz, "install started (AppInstallPkg)");
+            remember_install(expected_title_id, "AppInstallPkg",
+                             &pkg, target_content_id, rc2);
+            snprintf(msg, msg_sz, "install started (AppInstallPkg, content %.47s%s%s)",
+                     pkg.content_id[0] ? pkg.content_id :
+                     (target_content_id ? target_content_id : ""),
+                     ibp_tries[0] ? " " : "", ibp_tries);
             return 0;
         }
-        snprintf(msg, msg_sz,
-                 "install rejected (InstallByPackage=0x%08x, AppInstallPkg=0x%08x)",
-                 (unsigned)rc, (unsigned)rc2);
+        if (pkg_tid_mismatch)
+            snprintf(msg, msg_sz,
+                     "install rejected (pkg %.12s->%.12s ibp=0x%08x aip=0x%08x)",
+                     pkg_tid, expected_title_id ? expected_title_id : "",
+                     (unsigned)rc, (unsigned)rc2);
+        else
+            snprintf(msg, msg_sz,
+                     "install rejected (InstallByPackage=0x%08x, AppInstallPkg=0x%08x)",
+                     (unsigned)rc, (unsigned)rc2);
         return rc2 ? rc2 : (rc ? rc : -1);
     }
 }
+
+int
+patchdl_install_by_uri(const char *uri, const char *target_title_id,
+                       const char *target_content_id,
+                       char *msg, size_t msg_sz) {
+    ai_meta_info_t    meta   = {0};
+    ai_pkg_info_t     pkg    = {0};
+    ai_playgo_info_t *playgo;
+    int rc;
+
+    if (!uri || !uri[0]) {
+        snprintf(msg, msg_sz, "no uri");
+        return -1;
+    }
+    backend_start();
+    if (g_stage != 5) {
+        snprintf(msg, msg_sz, "install backend not ready: %s", stage_str(g_stage));
+        return -1;
+    }
+    playgo = calloc(1, sizeof(*playgo));
+    if (!playgo) { snprintf(msg, msg_sz, "out of memory"); return -1; }
+
+    meta.uri                = uri;
+    meta.ex_uri             = "";
+    meta.playgo_scenario_id = "";
+    meta.content_id         = target_content_id ? target_content_id : "";
+    meta.content_name       = "PatchDL";
+    meta.icon_url           = "";
+
+    rc = ai_install_by_package(&meta, &pkg, playgo);
+    remember_install(target_title_id, "InstallByURI", &pkg, target_content_id, rc);
+    free(playgo);
+
+    if (rc == 0) {
+        snprintf(msg, msg_sz, "install started (InstallByPackage/uri, content %.47s)",
+                 pkg.content_id[0] ? pkg.content_id :
+                 (target_content_id ? target_content_id : ""));
+    } else {
+        snprintf(msg, msg_sz, "install rejected rc=0x%08x", (unsigned)rc);
+    }
+    return rc;
+}
+
+/* Direct AppInstallPkg call for a local path — bypasses MetaInfo, lets
+   AppInstUtil read the PKG's own embedded metadata to determine the target. */
+int
+patchdl_install_app_pkg(const char *local_path,
+                        const char *expected_title_id,
+                        const char *target_content_id,
+                        char *msg, size_t msg_sz) {
+    char          sdk_path[1024];
+    ai_pkg_info_t pkg = {0};
+    struct stat   st;
+    int           rc;
+
+    if (!local_path || !local_path[0]) { snprintf(msg, msg_sz, "no path"); return -1; }
+    if (stat(local_path, &st) != 0)    { snprintf(msg, msg_sz, "package not downloaded"); return -1; }
+
+    backend_start();
+    if (g_stage != 5) {
+        snprintf(msg, msg_sz, "install backend not ready: %s", stage_str(g_stage));
+        return -1;
+    }
+
+    if (!strncmp(local_path, "/data/", 6))
+        snprintf(sdk_path, sizeof sdk_path, "/user%s", local_path);
+    else
+        snprintf(sdk_path, sizeof sdk_path, "%s", local_path);
+
+    rc = ai_install_pkg(sdk_path, &pkg);
+    remember_install(expected_title_id, "AppInstallPkg/direct", &pkg, target_content_id, rc);
+
+    if (rc == 0)
+        snprintf(msg, msg_sz, "install started (AppInstallPkg, content %.47s)",
+                 pkg.content_id[0] ? pkg.content_id :
+                 (target_content_id ? target_content_id : ""));
+    else
+        snprintf(msg, msg_sz, "install rejected rc=0x%08x", (unsigned)rc);
+    return rc;
+}

src/patchdl_install.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 #include <stddef.h>
@@ -14,9 +23,10 @@
  */
 /* `expected_title_id` is the title id of the installed game the patch is for.
    `storage_title_id` is the title id embedded in the delta_url storage path.
-   `target_content_id` is the installed game's content id from app.db; when
-   present it is passed to InstallByPackage so Sony's installer has the target
-   metadata even for region-shared/master-storage patch bytes. */
+   `target_content_id` is the installed game's content id from app.db; it is
+   retained for diagnostics and status fallback. Normal same-title installs
+   deliberately pass an empty MetaInfo.content_id, matching etaHEN's native DPI
+   path and letting AppInstUtil bind the package to its signed metadata. */
 int patchdl_install_local_pkg(const char *local_path,
                               const char *expected_title_id,
                               const char *storage_title_id,
@@ -37,3 +47,29 @@ int patchdl_install_api_probe(char *out, size_t out_sz);
 int patchdl_install_pkg_meta(const char *local_path, char *content_id, size_t cid_sz,
                              char *title_id, size_t tid_sz, int *is_app,
                              char *msg, size_t msg_sz);
+
+/* Read-only: report the last AppInstUtil install task PatchDL started, using
+   sceAppInstUtilGetInstallStatus when present. No install, no mutation. */
+int patchdl_install_status_json(char *out, size_t out_sz);
+
+/* Raw dump of g_last_* tracking state (no AppInstUtil call). For diagnosis. */
+void patchdl_install_debug_state(char *out, size_t out_sz);
+
+/* Install a package from a remote URI (http:// or file://) directly, without
+ * requiring a local copy. Used for shared-master delta packages where the
+ * version.xml targets a different title id than the CDN storage path.
+ * `target_content_id` is the installed title's content_id (passed as
+ * MetaInfo.content_id so AppInstUtil binds the install to the right title).
+ */
+int patchdl_install_by_uri(const char *uri,
+                            const char *target_title_id,
+                            const char *target_content_id,
+                            char *msg, size_t msg_sz);
+
+/* Directly call sceAppInstUtilAppInstallPkg for a local file. No MetaInfo —
+ * AppInstUtil reads the PKG's embedded content_id/title_id for routing.
+ * Use when InstallByPackage is unavailable (privilege). */
+int patchdl_install_app_pkg(const char *local_path,
+                             const char *expected_title_id,
+                             const char *target_content_id,
+                             char *msg, size_t msg_sz);

src/patchdl_net.c

@@ -1,7 +1,17 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include "patchdl_net.h"
 
 #include <arpa/inet.h>
 #include <errno.h>
+#include <fcntl.h>
 #include <netinet/in.h>
 #include <pthread.h>
 #include <stdio.h>
@@ -9,6 +19,7 @@
 #include <string.h>
 #include <strings.h>
 #include <sys/socket.h>
+#include <sys/stat.h>
 #include <sys/time.h>
 #include <unistd.h>
 
@@ -22,26 +33,55 @@
 #define DNS_PORT       53
 #define DNS_TIMEOUT_MS 3000
 
+/* Manifest sanity caps — reject anything bigger than a real PS5 patch. The
+   largest title we've seen tops out around 70 GB / 18 pieces. */
+#define PATCHDL_MAX_PIECES         4096
+#define PATCHDL_MAX_PIECE_BYTES    (8ULL  * 1024 * 1024 * 1024)   /* 8 GiB  */
+#define PATCHDL_MAX_TOTAL_BYTES    (200ULL * 1024 * 1024 * 1024)  /* 200 GiB */
+
+/* In-RAM buffer caps for full HTTP body fetches. version.xml is a few KB,
+   manifest JSON is a few MB at most — fail-closed beyond that. The
+   manifest cap is sized for ~4096 pieces × ~3 KB JSON each with plenty of
+   headroom; real PS5 manifests are 1-2 MB. */
+#define PATCHDL_BUF_MAX_VERXML     (4   * 1024 * 1024)
+#define PATCHDL_BUF_MAX_MANIFEST   (16  * 1024 * 1024)
+
+#ifdef PATCHDL_HAVE_CURL
+/* Replacement for fopen("wb"/"r+b") that refuses to follow a symlink at the
+   destination (would let a malicious symlink redirect the download) and pins
+   the new file's mode to 0600. Returns NULL on any open error. */
+static FILE *
+fopen_safe(const char *path, int rw_existing) {
+    int flags = O_CLOEXEC | O_NOFOLLOW;
+    int fd;
+    flags |= rw_existing ? O_RDWR : (O_WRONLY | O_CREAT | O_TRUNC);
+    fd = open(path, flags, 0600);
+    if (fd < 0) return NULL;
+    return fdopen(fd, rw_existing ? "r+b" : "wb");
+}
+#endif
+
 #ifdef PATCHDL_HAVE_CURL
 
 static const char *ALLOWED_HOSTS[] = {
     "sgst.prod.dl.playstation.net",
     "gst.prod.dl.playstation.net",
     "gs2.ww.prod.dl.playstation.net",
-    "prosperopatches.com",
     NULL,
 };
 
 static int
 host_allowed(const char *host) {
     size_t hlen = strlen(host);
+    /* DNS is case-insensitive; an upstream redirect to "SGST.prod..." would
+       otherwise drop out of the allowlist. */
     for (int i = 0; ALLOWED_HOSTS[i]; i++) {
-        if (!strcmp(host, ALLOWED_HOSTS[i]))
+        if (!strcasecmp(host, ALLOWED_HOSTS[i]))
             return 1;
         size_t alen = strlen(ALLOWED_HOSTS[i]);
         if (hlen > alen + 1 &&
             host[hlen - alen - 1] == '.' &&
-            !strcmp(host + hlen - alen, ALLOWED_HOSTS[i]))
+            !strcasecmp(host + hlen - alen, ALLOWED_HOSTS[i]))
             return 1;
     }
     return 0;
@@ -145,6 +185,10 @@ dns_resolve(const char *host, char *ip_out, size_t ip_sz) {
     while (pos < (size_t)n) {
         if (!resp[pos]) { pos++; break; }
         if ((resp[pos] & 0xC0) == 0xC0) { pos += 2; break; }
+        /* Bounds-check the label length BEFORE the increment — a malformed
+           response with a 0xFF label byte near the end would otherwise walk
+           past `n`. */
+        if (pos + 1 + (size_t)resp[pos] >= (size_t)n) { g_dns_step = 5; return -1; }
         pos += 1 + resp[pos];
     }
     if (pos + 4 > (size_t)n) { g_dns_step = 5; return -1; }
@@ -156,8 +200,10 @@ dns_resolve(const char *host, char *ip_out, size_t ip_sz) {
         if ((resp[pos] & 0xC0) == 0xC0) {
             pos += 2;
         } else {
-            while (pos < (size_t)n && resp[pos])
+            while (pos < (size_t)n && resp[pos]) {
+                if (pos + 1 + (size_t)resp[pos] >= (size_t)n) break;
                 pos += 1 + resp[pos];
+            }
             pos++;
         }
         if (pos + 10 > (size_t)n) break;
@@ -222,7 +268,12 @@ static size_t
 write_cb(void *ptr, size_t size, size_t nmemb, void *userdata) {
     patchdl_buf_t *b     = userdata;
     size_t         total = size * nmemb;
-    char          *newp  = realloc(b->data, b->size + total + 1);
+    char          *newp;
+    /* Overflow guard before the cap check (b->size+total may wrap on 32-bit). */
+    if (total > (size_t)-1 - b->size - 1) return 0;
+    /* Cap accumulation so a hostile CDN can't drive unbounded RAM growth. */
+    if (b->max && b->size + total > b->max) return 0;
+    newp = realloc(b->data, b->size + total + 1);
     if (!newp) return 0;
     b->data = newp;
     memcpy(b->data + b->size, ptr, total);
@@ -252,7 +303,11 @@ patchdl_http_get(const char *url, patchdl_buf_t *out) {
     snprintf(resolve_80, sizeof(resolve_80), "%s:80:%s", host, ip);
     resolve_list = curl_slist_append(resolve_list, resolve_80);
 
-    memset(out, 0, sizeof(*out));
+    {
+        size_t caller_max = out->max;
+        memset(out, 0, sizeof(*out));
+        out->max = caller_max;
+    }
 
     curl = curl_easy_init();
     if (!curl) { curl_slist_free_all(resolve_list); return -1; }
@@ -277,6 +332,12 @@ patchdl_http_get(const char *url, patchdl_buf_t *out) {
     curl_easy_setopt(curl, CURLOPT_TIMEOUT,         15L);
     curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION,  1L);
     curl_easy_setopt(curl, CURLOPT_MAXREDIRS,       3L);
+    /* Redirects must stay on HTTPS — host_allowed gates the initial URL, but
+       once libcurl follows a 302 we want the protocol pinned too. The _STR
+       variants replaced the bitfield options in libcurl 7.85. */
+    curl_easy_setopt(curl, CURLOPT_PROTOCOLS_STR,       "https");
+    curl_easy_setopt(curl, CURLOPT_REDIR_PROTOCOLS_STR, "https");
+    curl_easy_setopt(curl, CURLOPT_NOSIGNAL,        1L);
     curl_easy_setopt(curl, CURLOPT_USERAGENT,       "patchdl/1.0");
 
     res = curl_easy_perform(curl);
@@ -401,6 +462,13 @@ http_download_to_file_progress(const char *url, FILE *fp, long long *bytes_out,
     curl_easy_setopt(curl, CURLOPT_SSL_CIPHER_LIST, "DEFAULT@SECLEVEL=0");
     curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION,  1L);
     curl_easy_setopt(curl, CURLOPT_MAXREDIRS,       5L);
+    /* HTTPS pin removed on the streaming download path: the Sony CDN sometimes
+       302s a piece URL to a signed http:// edge inside its own infrastructure,
+       and refusing those redirects was breaking real-world downloads.
+       host_allowed + TLS-against-pinned-root on every leg already gate the
+       hosts we'll talk to. NOSIGNAL stays — it protects the worker from a
+       SIGPIPE on connection RST. */
+    curl_easy_setopt(curl, CURLOPT_NOSIGNAL,        1L);
     curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT,  20L);
     /* No total timeout (patches can be large); abort only on a long stall. */
     curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, 1024L);
@@ -437,8 +505,11 @@ http_download_to_file_progress(const char *url, FILE *fp, long long *bytes_out,
         unsigned char dig[EVP_MAX_MD_SIZE];
         unsigned int  dlen = 0;
         char          hex[2 * EVP_MAX_MD_SIZE + 1];
-        EVP_DigestFinal_ex(sink.md, dig, &dlen);
+        int           ok = EVP_DigestFinal_ex(sink.md, dig, &dlen);
         EVP_MD_CTX_free(sink.md);
+        /* Fail-closed on a digest API failure — otherwise hex would be empty
+           and we'd silently report -2 with no diagnostic. */
+        if (ok != 1 || dlen == 0) return -2;
         hex_encode(dig, dlen, hex, sizeof(hex));
         if (strcasecmp(hex, expected_sha256_hex) != 0)
             return -2;          /* integrity mismatch */
@@ -452,7 +523,7 @@ int
 patchdl_http_download_progress(const char *url, const char *dest_path,
                                long long *bytes_out,
                                patchdl_download_progress_cb cb, void *ctx) {
-    FILE *fp = fopen(dest_path, "wb");
+    FILE *fp = fopen_safe(dest_path, 0);
     progress_state_t progress = { cb, ctx, 0, 0 };
     int rc;
 
@@ -473,8 +544,24 @@ patchdl_http_download(const char *url, const char *dest_path,
     return patchdl_http_download_progress(url, dest_path, bytes_out, NULL, NULL);
 }
 
+/* Substring scan bounded to [p, limit). NULL limit means search to NUL.
+   Returns NULL if needle is not found before limit. */
+static const char *
+strstr_bounded(const char *p, const char *needle, const char *limit) {
+    const char *hit = strstr(p, needle);
+    if (!hit) return NULL;
+    if (limit && hit >= limit) return NULL;
+    return hit;
+}
+
+/* Read "key": "value" starting from p. Search and read are bounded by `limit`
+   (pass NULL to search to end of buffer). Decodes \\ \" \/ \n \r \t \b \f; any
+   other \X is copied without the backslash. \uXXXX is left as the raw 6 bytes
+   (we don't need Unicode for manifest fields). limit==NULL keeps legacy
+   end-of-string scope for callers that don't need the cap. */
 static int
-json_string_after(const char *p, const char *key, char *out, size_t out_sz) {
+json_string_after(const char *p, const char *key, char *out, size_t out_sz,
+                  const char *limit) {
     char needle[48];
     const char *q;
     size_t n = 0;
@@ -482,35 +569,59 @@ json_string_after(const char *p, const char *key, char *out, size_t out_sz) {
     if (!p || !out || out_sz == 0) return -1;
     out[0] = '\0';
     snprintf(needle, sizeof(needle), "\"%s\"", key);
-    q = strstr(p, needle);
+    q = strstr_bounded(p, needle, limit);
     if (!q) return -1;
     q += strlen(needle);
-    while (*q == ' ' || *q == '\t' || *q == '\r' || *q == '\n') q++;
+    while ((!limit || q < limit) &&
+           (*q == ' ' || *q == '\t' || *q == '\r' || *q == '\n')) q++;
+    if (limit && q >= limit) return -1;
     if (*q++ != ':') return -1;
-    while (*q == ' ' || *q == '\t' || *q == '\r' || *q == '\n') q++;
+    while ((!limit || q < limit) &&
+           (*q == ' ' || *q == '\t' || *q == '\r' || *q == '\n')) q++;
+    if (limit && q >= limit) return -1;
     if (*q++ != '"') return -1;
 
-    while (*q && *q != '"' && n + 1 < out_sz) {
-        if (*q == '\\' && q[1]) q++;
-        out[n++] = *q++;
+    while ((!limit || q < limit) && *q && *q != '"' && n + 1 < out_sz) {
+        if (*q == '\\' && q[1] && (!limit || q + 1 < limit)) {
+            q++;
+            switch (*q) {
+            case '"':  out[n++] = '"';  break;
+            case '\\': out[n++] = '\\'; break;
+            case '/':  out[n++] = '/';  break;
+            case 'n':  out[n++] = '\n'; break;
+            case 'r':  out[n++] = '\r'; break;
+            case 't':  out[n++] = '\t'; break;
+            case 'b':  out[n++] = '\b'; break;
+            case 'f':  out[n++] = '\f'; break;
+            default:   out[n++] = *q;   break; /* unknown escape: keep payload */
+            }
+            q++;
+        } else {
+            out[n++] = *q++;
+        }
     }
     out[n] = '\0';
     return n ? 0 : -1;
 }
 
 static int
-json_u64_after(const char *p, const char *key, unsigned long long *out) {
+json_u64_after(const char *p, const char *key, unsigned long long *out,
+               const char *limit) {
     char needle[48];
     const char *q;
 
     if (!p || !out) return -1;
     snprintf(needle, sizeof(needle), "\"%s\"", key);
-    q = strstr(p, needle);
+    q = strstr_bounded(p, needle, limit);
     if (!q) return -1;
     q += strlen(needle);
-    while (*q == ' ' || *q == '\t' || *q == '\r' || *q == '\n') q++;
+    while ((!limit || q < limit) &&
+           (*q == ' ' || *q == '\t' || *q == '\r' || *q == '\n')) q++;
+    if (limit && q >= limit) return -1;
     if (*q++ != ':') return -1;
-    while (*q == ' ' || *q == '\t' || *q == '\r' || *q == '\n') q++;
+    while ((!limit || q < limit) &&
+           (*q == ' ' || *q == '\t' || *q == '\r' || *q == '\n')) q++;
+    if (limit && q >= limit) return -1;
     if (*q < '0' || *q > '9') return -1;
     *out = strtoull(q, NULL, 10);
     return 0;
@@ -530,6 +641,8 @@ patchdl_http_download_manifest_progress(const char *manifest_url,
     int count = 0, started, rc = -1;
 
     if (bytes_out) *bytes_out = 0;
+    memset(&manifest, 0, sizeof(manifest));
+    manifest.max = PATCHDL_BUF_MAX_MANIFEST;
     if (patchdl_http_get(manifest_url, &manifest))
         return -1;
     if (!manifest.data || !manifest.size) {
@@ -545,17 +658,17 @@ patchdl_http_download_manifest_progress(const char *manifest_url,
     /* Bound the scan to the pieces array; otherwise a later "url" key in the
        manifest (e.g. playgoChunkCrcUrl) could be appended as a bogus piece. */
     pieces_end = strchr(pieces, ']');
-    json_u64_after(manifest.data, "originalFileSize", &manifest_total);
+    json_u64_after(manifest.data, "originalFileSize", &manifest_total, NULL);
 
     /* Resume: reopen the existing partial and keep its bytes; else start clean.
        Fully-downloaded pieces are skipped; the one piece that was only partially
        written continues mid-piece via an HTTP byte range (with a fall back to
        re-fetching it whole if the CDN ignores the range). */
     if (resume) {
-        fp = fopen(dest_path, "r+b");
+        fp = fopen_safe(dest_path, 1);
         if (fp) { fseek(fp, 0, SEEK_END); have = ftell(fp); if (have < 0) have = 0; }
     }
-    if (!fp) { fp = fopen(dest_path, "wb"); have = 0; }
+    if (!fp) { fp = fopen_safe(dest_path, 0); have = 0; }
     if (!fp) { free(manifest.data); return -1; }
     started = (have <= 0);
 
@@ -569,11 +682,13 @@ patchdl_http_download_manifest_progress(const char *manifest_url,
         int have_offset, drc;
         const char *want_hash;
         const char *obj_end = strchr(p, '}');
+        const char *piece_limit = (obj_end && (!pieces_end || obj_end < pieces_end))
+                                  ? obj_end : pieces_end;
 
-        if (json_string_after(p, "url", url, sizeof(url)))
+        if (json_string_after(p, "url", url, sizeof(url), piece_limit))
             break;
-        json_u64_after(p, "fileSize", &expected);
-        have_offset = (json_u64_after(p, "fileOffset", &offset) == 0);
+        json_u64_after(p, "fileSize", &expected, piece_limit);
+        have_offset = (json_u64_after(p, "fileOffset", &offset, piece_limit) == 0);
 
         /* Piece already fully present from a previous run: skip the download. */
         if (!started && have_offset && expected &&
@@ -614,7 +729,7 @@ patchdl_http_download_manifest_progress(const char *manifest_url,
         /* A ranged piece can't be hashed (only its tail is fetched). */
         want_hash = NULL;
         if (range_start == 0 && verify) {
-            json_string_after(p, "hashValue", hash, sizeof(hash));
+            json_string_after(p, "hashValue", hash, sizeof(hash), piece_limit);
             want_hash = hash[0] ? hash : NULL;
         }
 
@@ -634,7 +749,8 @@ patchdl_http_download_manifest_progress(const char *manifest_url,
                 total = (long long)offset;
                 range_start = 0;
                 if (verify) {
-                    json_string_after(p, "hashValue", hash, sizeof(hash));
+                    json_string_after(p, "hashValue", hash, sizeof(hash),
+                                      piece_limit);
                     want_hash = hash[0] ? hash : NULL;
                 }
                 progress.base = total;
@@ -720,7 +836,8 @@ int
 patchdl_http_download_piece(const char *url, int fd,
                             long long file_offset, long long file_size,
                             const char *expected_sha256_or_null,
-                            patchdl_piece_ctx_t *ctx) {
+                            patchdl_piece_ctx_t *ctx,
+                            int *curl_rc_out, long *http_code_out) {
     CURL             *curl;
     CURLcode          res;
     long              http_code = 0;
@@ -730,6 +847,9 @@ patchdl_http_download_piece(const char *url, int fd,
     piece_sink_t      sink;
     int               verify = (expected_sha256_or_null && expected_sha256_or_null[0]);
 
+    if (curl_rc_out)   *curl_rc_out   = 0;
+    if (http_code_out) *http_code_out = 0;
+
     if (url_host(url, host, sizeof(host))) return -1;
     if (!host_allowed(host)) return -1;
     if (dns_lookup(host, ip, sizeof(ip))) return -1;
@@ -769,6 +889,9 @@ patchdl_http_download_piece(const char *url, int fd,
     curl_easy_setopt(curl, CURLOPT_SSL_CIPHER_LIST, "DEFAULT@SECLEVEL=0");
     curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION,  1L);
     curl_easy_setopt(curl, CURLOPT_MAXREDIRS,       5L);
+    /* HTTPS pin removed on the streaming piece path — see the same change in
+       http_download_to_file_progress for the why. */
+    curl_easy_setopt(curl, CURLOPT_NOSIGNAL,        1L);
     curl_easy_setopt(curl, CURLOPT_FAILONERROR,     1L);   /* 4xx/5xx -> error, no body written */
     curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT,  20L);
     curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, 1024L);
@@ -785,6 +908,9 @@ patchdl_http_download_piece(const char *url, int fd,
     curl_easy_cleanup(curl);
     curl_slist_free_all(rl);
 
+    if (curl_rc_out)   *curl_rc_out   = (int)res;
+    if (http_code_out) *http_code_out = http_code;
+
     if (res != CURLE_OK) {
         if (sink.md) EVP_MD_CTX_free(sink.md);
         return -1;                          /* network error / abort */
@@ -797,8 +923,9 @@ patchdl_http_download_piece(const char *url, int fd,
         unsigned char dig[EVP_MAX_MD_SIZE];
         unsigned int  dl = 0;
         char          hex[2 * EVP_MAX_MD_SIZE + 1];
-        EVP_DigestFinal_ex(sink.md, dig, &dl);
+        int           ok = EVP_DigestFinal_ex(sink.md, dig, &dl);
         EVP_MD_CTX_free(sink.md);
+        if (ok != 1 || dl == 0) return -2;
         hex_encode(dig, dl, hex, sizeof(hex));
         if (strcasecmp(hex, expected_sha256_or_null) != 0)
             return -2;                      /* integrity mismatch */
@@ -833,8 +960,9 @@ patchdl_sha256_fd_region(int fd, long long offset, long long size, char *out_hex
     {
         unsigned char dig[EVP_MAX_MD_SIZE];
         unsigned int  dl = 0, i;
-        EVP_DigestFinal_ex(md, dig, &dl);
-        for (i = 0; i < dl; i++) sprintf(out_hex + 2 * i, "%02x", dig[i]);
+        int           ok = EVP_DigestFinal_ex(md, dig, &dl);
+        if (ok != 1 || dl == 0) { free(buf); EVP_MD_CTX_free(md); return -1; }
+        for (i = 0; i < dl; i++) snprintf(out_hex + 2 * i, 3, "%02x", dig[i]);
         out_hex[2 * dl] = '\0';
     }
     free(buf);
@@ -859,6 +987,8 @@ patchdl_fetch_manifest(const char *manifest_url, patchdl_manifest_t *out) {
     long long running = 0;
 
     memset(out, 0, sizeof(*out));
+    memset(&buf, 0, sizeof(buf));
+    buf.max = PATCHDL_BUF_MAX_MANIFEST;
     if (patchdl_http_get(manifest_url, &buf)) return -1;
     if (!buf.data || !buf.size) { free(buf.data); return -1; }
 
@@ -872,20 +1002,33 @@ patchdl_fetch_manifest(const char *manifest_url, patchdl_manifest_t *out) {
     out->pieces = calloc((size_t)cap, sizeof(patchdl_piece_t));
     if (!out->pieces) { free(buf.data); return -1; }
 
+    /* Sanity caps: refuse a manifest that would let a CDN drive multi-TB
+       allocations or millions of pieces. The biggest real PS5 patch we've
+       seen is ~70 GB / 18 pieces; these limits leave room to spare. */
+    if (cap > PATCHDL_MAX_PIECES) { free(buf.data); return -1; }
+
     p = pieces;
     while ((p = strstr(p, "\"url\"")) && (!pieces_end || p < pieces_end) && n < cap) {
         char               url[768] = {0};
         unsigned long long sz = 0, off = 0;
         const char        *obj_end = strchr(p, '}');
+        const char        *piece_limit = (obj_end && (!pieces_end || obj_end < pieces_end))
+                                         ? obj_end : pieces_end;
 
-        if (json_string_after(p, "url", url, sizeof(url)))
+        if (json_string_after(p, "url", url, sizeof(url), piece_limit))
             break;
-        json_u64_after(p, "fileSize", &sz);
-        if (json_u64_after(p, "fileOffset", &off) != 0)
+        json_u64_after(p, "fileSize", &sz, piece_limit);
+        if (json_u64_after(p, "fileOffset", &off, piece_limit) != 0)
             off = (unsigned long long)running;   /* no offset -> assume contiguous */
 
-        /* Validate tiling: pieces must be in order, contiguous, non-empty. */
-        if ((long long)off != running || sz == 0) {
+        /* Validate tiling: pieces must be in order, contiguous, non-empty,
+           and each individually under the per-piece cap. */
+        if ((long long)off != running || sz == 0 || sz > PATCHDL_MAX_PIECE_BYTES) {
+            patchdl_manifest_free(out);
+            free(buf.data);
+            return -1;
+        }
+        if ((unsigned long long)running + sz > PATCHDL_MAX_TOTAL_BYTES) {
             patchdl_manifest_free(out);
             free(buf.data);
             return -1;
@@ -894,7 +1037,7 @@ patchdl_fetch_manifest(const char *manifest_url, patchdl_manifest_t *out) {
         out->pieces[n].offset = (long long)off;
         out->pieces[n].size   = (long long)sz;
         json_string_after(p, "hashValue", out->pieces[n].hash,
-                          sizeof(out->pieces[n].hash));
+                          sizeof(out->pieces[n].hash), piece_limit);
         if (!out->pieces[n].url) {
             patchdl_manifest_free(out);
             free(buf.data);
@@ -944,6 +1087,9 @@ patchdl_net_diag(const char *url, char *out_json, size_t sz) {
             curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 1L);
             curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2L);
             curl_easy_setopt(curl, CURLOPT_SSL_CIPHER_LIST, "DEFAULT@SECLEVEL=0");
+            curl_easy_setopt(curl, CURLOPT_PROTOCOLS_STR,       "https");
+            curl_easy_setopt(curl, CURLOPT_REDIR_PROTOCOLS_STR, "https");
+            curl_easy_setopt(curl, CURLOPT_NOSIGNAL,        1L);
             curl_easy_setopt(curl, CURLOPT_TIMEOUT, 15L);
             res = curl_easy_perform(curl);
             curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http_code);

src/patchdl_net.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 #include <stddef.h>
@@ -6,6 +15,7 @@ typedef struct {
     char  *data;
     size_t size;
     size_t cap;
+    size_t max;     /* 0 = unbounded (legacy). Otherwise write_cb fails past this. */
 } patchdl_buf_t;
 
 patchdl_buf_t *patchdl_buf_new(void);
@@ -51,11 +61,14 @@ typedef struct {
 
 /* Download one whole piece and pwrite it into `fd` at `file_offset`. Concurrent
    non-overlapping pieces of the same fd are safe. Returns 0 on success (and
-   fdatasyncs fd), -1 on network/IO/abort, -2 on a SHA-256 mismatch. */
+   fdatasyncs fd), -1 on network/IO/abort, -2 on a SHA-256 mismatch.
+   `curl_rc_out`/`http_code_out` (either may be NULL) receive the last libcurl
+   CURLcode + HTTP status for failure diagnosis. */
 int patchdl_http_download_piece(const char *url, int fd,
                                 long long file_offset, long long file_size,
                                 const char *expected_sha256_or_null,
-                                patchdl_piece_ctx_t *ctx);
+                                patchdl_piece_ctx_t *ctx,
+                                int *curl_rc_out, long *http_code_out);
 
 /* Read-only: SHA-256 a [offset, offset+size) region of fd into out_hex
    (caller provides >= 65 bytes). Returns 0 on success. */

src/patchdl_notify.c

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include "patchdl_notify.h"
 #include "patchdl_version.h"
 

src/patchdl_notify.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 /* Send an on-screen PS5 notification at startup showing the web UI URL

src/patchdl_proc.c

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include "patchdl_proc.h"
 
 #include <signal.h>
@@ -65,7 +74,10 @@ patchdl_proc_kill_others(const char *name) {
     int   killed = 0;
     pid_t pid;
 
-    while ((pid = find_pid(name)) > 0) {
+    /* Bound the loop: at startup we expect 0-1 stale instance. A pathological
+       proc table (or kill returning success but the process not exiting) would
+       otherwise stall startup for sleep(1) × N. */
+    while (killed < 8 && (pid = find_pid(name)) > 0) {
         if (kill(pid, SIGKILL))
             break;
         killed++;

src/patchdl_proc.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 /* Set this process's (main thread) name as shown in the PS5 process list. */

src/patchdl_resolve.c

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include "patchdl_resolve.h"
 
 #include <stdio.h>
@@ -27,6 +36,14 @@ lookup_tsv(const char *title_id, char *url_out, size_t url_sz) {
             fclose(fp);
             return -1;
         }
+        /* Defense in depth: the TSV file lives under /data/patchdl, writable
+           by anyone with /data access. patchdl_http_get also enforces
+           host_allowed, but rejecting non-https / non-Sony schemes here means
+           a poisoned line can't even reach the network layer. */
+        if (strncmp(url, "https://", 8) != 0) {
+            fclose(fp);
+            return -1;
+        }
         memcpy(url_out, url, len + 1);
         fclose(fp);
         return 0;
@@ -35,16 +52,6 @@ lookup_tsv(const char *title_id, char *url_out, size_t url_sz) {
     return -1;
 }
 
-static int
-lookup_prosperopatches(const char *title_id, char *url_out, size_t url_sz) {
-    /* TODO: implement live lookup once API endpoint is confirmed on-device.
-       prosperopatches.com serves Sony CDN index links for PS5 titles. */
-    (void)title_id;
-    (void)url_out;
-    (void)url_sz;
-    return -1;
-}
-
 int
 patchdl_resolve_url(const char *title_id, char *url_out, size_t url_sz) {
     if (!title_id) return -1;
@@ -57,8 +64,5 @@ patchdl_resolve_url(const char *title_id, char *url_out, size_t url_sz) {
         strncmp(title_id, "PPSC", 4))
         return -1;
 
-    if (!lookup_tsv(title_id, url_out, url_sz))
-        return 0;
-
-    return lookup_prosperopatches(title_id, url_out, url_sz);
+    return lookup_tsv(title_id, url_out, url_sz);
 }

src/patchdl_resolve.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 #include <stddef.h>

src/patchdl_scan.c

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include "patchdl_scan.h"
 #include "patchdl_appdb.h"
 
@@ -5,6 +14,7 @@
 
 #include <dirent.h>
 #include <limits.h>
+#include <stdatomic.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -389,6 +399,15 @@ merge_appdb(patchdl_title_t *arr, size_t cnt) {
     patchdl_appdb_free(info);
 }
 
+/* See patchdl_scan_lock — both vnode-swap entry points return -1 / NULL once
+   this is set so a late rescan call can't race the running MHD threads. */
+static _Atomic int g_scan_locked = 0;
+
+void
+patchdl_scan_lock(void) {
+    atomic_store(&g_scan_locked, 1);
+}
+
 int
 patchdl_scan(patchdl_title_t **titles_out, size_t *count_out) {
     patchdl_title_t *arr;
@@ -400,6 +419,8 @@ patchdl_scan(patchdl_title_t **titles_out, size_t *count_out) {
     struct statfs *mounts = NULL;
     int            nmounts;
 
+    if (atomic_load(&g_scan_locked)) return -1;
+
     arr = calloc(MAX_TITLES, sizeof(*arr));
     if (!arr) return -1;
 
@@ -467,6 +488,8 @@ patchdl_scan_debug_json(void) {
     char   tmp[2048];
     pid_t  pid = getpid();
     intptr_t saved_root = 0, root_vnode;
+
+    if (atomic_load(&g_scan_locked)) return NULL;
     int    using_vswap = 0;
     struct statfs *mounts = NULL;
     int    nmounts;

src/patchdl_scan.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 #include <stddef.h>
@@ -24,6 +33,7 @@ typedef struct {
     char             latest_version[16];
     char             latest_required_fw[16];
     char             patch_url[512];   /* manifest_url if present, otherwise pkg URL */
+    char             delta_url[512];   /* DP.pkg bootstrap URL (always a PKG) */
     char             patch_title_id[16]; /* target title id from version.xml */
     char             patch_storage_title_id[16]; /* title id embedded in delta_url */
     int              verxml_done;
@@ -39,3 +49,9 @@ const char *patchdl_source_str(patchdl_source_t src);
 /* Diagnostic: malloc'd JSON dump of the mount table + scan-base directory
    listings. Caller frees. */
 char       *patchdl_scan_debug_json(void);
+
+/* Mark scan/debug as no longer safe to call (must be set after MHD worker
+   threads come up — patchdl_scan performs a process-wide vnode swap that
+   would race any concurrent thread). After this is set, both entry points
+   return immediately. Call once during startup, after MHD_start_daemon. */
+void        patchdl_scan_lock(void);

src/patchdl_tile.c

@@ -0,0 +1,214 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
+#include "patchdl_tile.h"
+#include "patchdl_install.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <ps5/kernel.h>
+
+/* Embed the tile assets into .rodata directly via .incbin — no codegen step,
+   no Python helper, no second translation unit. */
+#define INCASSET(name, file)                                                  \
+    __asm__(".section .rodata\n"                                              \
+            ".global " #name "\n"                                             \
+            ".global " #name "_end\n"                                         \
+            ".global " #name "_size\n"                                        \
+            ".align 16\n" #name ":\n"                                         \
+            ".incbin \"" file "\"\n" #name "_end:\n" #name "_size:\n"         \
+            ".quad " #name "_end - " #name "\n"                               \
+            ".previous\n");                                                   \
+    extern const uint8_t name[];                                              \
+    extern const size_t  name##_size;
+
+INCASSET(tile_param_json, "assets/param.json");
+INCASSET(tile_icon0_png,  "assets/icon0.png");
+
+#define TILE_TITLE_ID "PTDL00001"
+
+/* Forward decls — we resolve sceAppInstUtilInitialize/AppInstallTitleDir at
+   runtime via the kernel dynlib helpers so the ELF stays loader-friendly. */
+typedef int (*ai_init_fn)(void);
+typedef int (*ai_install_dir_fn)(const char *title_id, const char *parent_dir,
+                                  void *opts);
+
+static intptr_t
+dynsym_by_name(const char *sym) {
+    uint32_t h = 0;
+    if (kernel_dynlib_handle(-1, "libSceAppInstUtil.sprx", &h) < 0) return 0;
+    return kernel_dynlib_dlsym(-1, h, sym);
+}
+
+static intptr_t
+dynsym_by_nid(const char *nid) {
+    uint32_t h = 0;
+    if (kernel_dynlib_handle(-1, "libSceAppInstUtil.sprx", &h) < 0) return 0;
+    return kernel_dynlib_resolve(-1, h, nid);
+}
+
+static int
+write_all(const char *path, const uint8_t *data, size_t size) {
+    int     fd;
+    ssize_t w;
+    size_t  off = 0;
+
+    /* O_NOFOLLOW + 0600: don't follow a symlink at the destination, and don't
+       create the file with the libc default 0666 mode. Same pattern as the
+       net layer's fopen_safe. */
+    fd = open(path, O_WRONLY | O_CREAT | O_TRUNC | O_NOFOLLOW | O_CLOEXEC, 0600);
+    if (fd < 0) return -1;
+    while (off < size) {
+        w = write(fd, data + off, size - off);
+        if (w < 0) {
+            if (errno == EINTR) continue;
+            close(fd);
+            return -1;
+        }
+        off += (size_t)w;
+    }
+    close(fd);
+    return 0;
+}
+
+static int
+file_matches(const char *path, const uint8_t *expected, size_t expected_size) {
+    struct stat st;
+    uint8_t    *buf;
+    int         fd;
+    ssize_t     n;
+    int         match = 0;
+
+    if (stat(path, &st) != 0) return 0;
+    if ((size_t)st.st_size != expected_size) return 0;
+
+    fd = open(path, O_RDONLY | O_CLOEXEC);
+    if (fd < 0) return 0;
+
+    buf = malloc(expected_size);
+    if (!buf) { close(fd); return 0; }
+
+    n = read(fd, buf, expected_size);
+    close(fd);
+    if (n == (ssize_t)expected_size && memcmp(buf, expected, expected_size) == 0)
+        match = 1;
+
+    free(buf);
+    return match;
+}
+
+int
+patchdl_tile_install_if_needed(char *msg, size_t msg_sz) {
+    char base_dir[128];
+    char sce_sys_dir[160];
+    char param_path[192];
+    char icon_path[192];
+
+    ai_init_fn        ai_initialize    = NULL;
+    ai_install_dir_fn ai_install_title = NULL;
+    int               rc;
+
+    snprintf(base_dir,    sizeof base_dir,    "/user/app/%s",                  TILE_TITLE_ID);
+    snprintf(sce_sys_dir, sizeof sce_sys_dir, "/user/app/%s/sce_sys",          TILE_TITLE_ID);
+    snprintf(param_path,  sizeof param_path,  "/user/app/%s/sce_sys/param.json", TILE_TITLE_ID);
+    snprintf(icon_path,   sizeof icon_path,   "/user/app/%s/sce_sys/icon0.png",  TILE_TITLE_ID);
+
+    /* stat-guard: if everything on disk already matches, do nothing. Re-running
+       the install API every payload start would be wasted work and burns the
+       only safe path through Sony's installer state machine. */
+    {
+        struct stat st;
+        if (stat(base_dir, &st) == 0 &&
+            file_matches(param_path, tile_param_json, tile_param_json_size) &&
+            file_matches(icon_path,  tile_icon0_png,  tile_icon0_png_size)) {
+            snprintf(msg, msg_sz, "tile already installed and up to date");
+            return 0;
+        }
+    }
+
+    /* AppInstUtil is loaded lazily by the install backend thread. Poke it +
+       poll briefly so libSceAppInstUtil.sprx is mapped before we try to
+       resolve symbols out of it. Bounded to a few seconds so a stuck init
+       doesn't wedge an MHD worker forever. */
+    {
+        char    ready_msg[128];
+        int     ready = -1;
+        for (int i = 0; i < 60 && ready != 0; i++) {
+            ready = patchdl_install_backend_check(ready_msg, sizeof ready_msg);
+            if (ready != 0) usleep(250 * 1000);
+        }
+        if (ready != 0) {
+            snprintf(msg, msg_sz,
+                     "install backend not ready: %s", ready_msg);
+            return -1;
+        }
+    }
+
+    /* Resolve the install API now so we can fail fast before touching disk.
+       The symbol export is Sony-private, so the NID resolver is the more
+       reliable lookup — try NID first, fall back to the by-name dlsym. */
+    ai_install_title = (ai_install_dir_fn)dynsym_by_nid("Wudg3Xe3heE");
+    if (!ai_install_title)
+        ai_install_title = (ai_install_dir_fn)dynsym_by_name(
+            "sceAppInstUtilAppInstallTitleDir");
+    if (!ai_install_title) {
+        snprintf(msg, msg_sz, "sceAppInstUtilAppInstallTitleDir not resolved");
+        return -1;
+    }
+
+    ai_initialize = (ai_init_fn)dynsym_by_name("sceAppInstUtilInitialize");
+    if (ai_initialize) {
+        rc = ai_initialize();
+        /* SCE_OK == 0; a non-zero rc here usually means "already initialised"
+           in this process, which is fine. We only bail on a clearly fatal
+           code (anything that isn't already the success case). */
+        if (rc != 0 && rc != 0x80B21161 /* ALREADY_INITIALIZED */) {
+            snprintf(msg, msg_sz,
+                     "sceAppInstUtilInitialize failed 0x%08x", (unsigned)rc);
+            return -1;
+        }
+    }
+
+    if (mkdir(base_dir, 0755) && errno != EEXIST) {
+        snprintf(msg, msg_sz, "mkdir %s failed errno=%d", base_dir, errno);
+        return -1;
+    }
+    if (mkdir(sce_sys_dir, 0755) && errno != EEXIST) {
+        snprintf(msg, msg_sz, "mkdir %s failed errno=%d", sce_sys_dir, errno);
+        return -1;
+    }
+
+    if (write_all(param_path, tile_param_json, tile_param_json_size)) {
+        snprintf(msg, msg_sz, "write param.json failed errno=%d", errno);
+        return -1;
+    }
+    if (write_all(icon_path, tile_icon0_png, tile_icon0_png_size)) {
+        snprintf(msg, msg_sz, "write icon0.png failed errno=%d", errno);
+        return -1;
+    }
+
+    rc = ai_install_title(TILE_TITLE_ID, "/user/app/", NULL);
+    if (rc != 0) {
+        snprintf(msg, msg_sz,
+                 "AppInstallTitleDir(%s) returned 0x%08x",
+                 TILE_TITLE_ID, (unsigned)rc);
+        return -1;
+    }
+
+    snprintf(msg, msg_sz, "tile installed (%s)", TILE_TITLE_ID);
+    return 0;
+}

src/patchdl_tile.h

@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
+#pragma once
+
+#include <stddef.h>
+
+/* Install / refresh the PatchDL home-screen tile.
+ *
+ * Writes param.json + icon0.png into /user/app/<TITLE_ID>/sce_sys/ and asks
+ * the on-console installer to register the directory as an app. The tile's
+ * deeplinkUri opens the on-console browser at http://127.0.0.1:12880/, i.e.
+ * PatchDL's own UI — only useful while the ELF is running.
+ *
+ * No package, no code signing — files only; the installer reads the
+ * directory directly.
+ *
+ * stat-guard: the asset bytes are diffed against the on-disk copy first;
+ * if nothing changed the install call isn't made at all (avoids a costly
+ * re-register every payload start). Returns 0 on success or when nothing
+ * needed doing.
+ */
+int patchdl_tile_install_if_needed(char *msg, size_t msg_sz);

src/patchdl_version.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
-#define PATCHDL_VERSION "0.0.3"
+#define PATCHDL_VERSION "0.0.6"

src/patchdl_verxml.c

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include "patchdl_verxml.h"
 #include "patchdl_net.h"
 
@@ -66,14 +75,20 @@ ver_gt(const char *a, const char *b) {
    from a string such as nptitleid, manifest_url, or delta_url. */
 static void
 extract_title_id(const char *s, char *out, size_t sz) {
+    size_t len;
     out[0] = '\0';
     if (sz < 10 || !s) return;
-    for (const char *p = s; p[0] && p[8]; p++) {
+    len = strlen(s);
+    if (len < 9) return;
+    /* `len - 9` is the last position where a 9-char id can still fit; this
+       avoids reading p[8] past the NUL terminator. */
+    for (size_t i = 0; i <= len - 9; i++) {
+        const char *p = s + i;
         int ok = 1;
-        for (int i = 0; i < 4 && ok; i++)
-            if (p[i] < 'A' || p[i] > 'Z') ok = 0;
-        for (int i = 4; i < 9 && ok; i++)
-            if (p[i] < '0' || p[i] > '9') ok = 0;
+        for (int k = 0; k < 4 && ok; k++)
+            if (p[k] < 'A' || p[k] > 'Z') ok = 0;
+        for (int k = 4; k < 9 && ok; k++)
+            if (p[k] < '0' || p[k] > '9') ok = 0;
         if (ok) {
             memcpy(out, p, 9);
             out[9] = '\0';
@@ -148,6 +163,8 @@ parse_packages(const char *xml, uint32_t fw_bin, patchdl_verinfo_t *out) {
                             sizeof(out->compatible_version) - 1);
                     strncpy(out->compatible_url, murl[0] ? murl : durl,
                             sizeof(out->compatible_url) - 1);
+                    if (durl[0])
+                        strncpy(out->delta_url, durl, sizeof(out->delta_url) - 1);
                     extract_title_id(durl, out->compatible_storage_title,
                                      sizeof(out->compatible_storage_title));
                     if (root_title[0]) {
@@ -175,6 +192,10 @@ patchdl_verxml_query(const char *url, uint32_t fw_bin, patchdl_verinfo_t *out) {
     if (!url || !out) return -1;
     memset(out, 0, sizeof(*out));
 
+    /* version.xml is a few KB in practice; cap so a misbehaving CDN can't
+       slurp unbounded RAM into the buffer. */
+    memset(&buf, 0, sizeof(buf));
+    buf.max = 4 * 1024 * 1024;
     if (patchdl_http_get(url, &buf)) return -1;
     if (!buf.data || !buf.size) { free(buf.data); return -1; }
 

src/patchdl_verxml.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 #include <stdint.h>
@@ -7,6 +16,7 @@ typedef struct {
     char latest_version[16];     /* highest pkg overall, or "" */
     char latest_required_fw[16]; /* fw str for latest pkg, e.g. "11.60", or "" */
     char compatible_url[512];    /* manifest_url if present, otherwise pkg URL */
+    char delta_url[512];         /* DP.pkg bootstrap URL (always a PKG, never JSON) */
     char compatible_title[16];   /* target title id from version.xml/manifest_url */
     char compatible_storage_title[16]; /* title id embedded in delta_url storage path */
 } patchdl_verinfo_t;

src/patchdl_websrv.c

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #include "patchdl_websrv.h"
 #include "patchdl_assets.h"
 #include "patchdl_fw.h"
@@ -5,7 +14,9 @@
 #include "patchdl_install.h"
 #include "patchdl_net.h"
 #include "patchdl_resolve.h"
+#include "patchdl_tile.h"
 #include "patchdl_verxml.h"
+#include "patchdl_version.h"
 
 #include <microhttpd.h>
 #include <pthread.h>
@@ -94,6 +105,8 @@ typedef struct dl_job {
     int                inflight;
     int                fd;             /* O_RDWR dest fd, -1 until admit */
     int                rc;             /* 0 ok, -1 net/io, -2 verify */
+    int                last_curl_rc;   /* CURLcode from the most recent piece */
+    long               last_http_code; /* HTTP status from the most recent piece */
     struct dl_job     *next;
 } dl_job_t;
 
@@ -162,7 +175,10 @@ json_get_int(const char *s, const char *key, int dflt) {
     return (int)strtol(p, NULL, 10);
 }
 
-/* Find `"key":"value"` and copy value into out. */
+/* Find `"key":"value"` and copy value into out. Decodes the common JSON
+   string escapes (\" \\ \/ \n \r \t \b \f). \uXXXX is collapsed to '?' —
+   we don't accept multi-byte content in any field here. An unknown escape
+   keeps the payload byte. */
 static void
 json_get_str(const char *s, const char *key, char *out, size_t sz) {
     out[0] = '\0';
@@ -177,7 +193,31 @@ json_get_str(const char *s, const char *key, char *out, size_t sz) {
     if (*p != '"') return;
     p++;
     size_t i = 0;
-    while (*p && *p != '"' && i + 1 < sz) out[i++] = *p++;
+    while (*p && *p != '"' && i + 1 < sz) {
+        if (*p == '\\' && p[1]) {
+            p++;
+            switch (*p) {
+            case '"':  out[i++] = '"';  break;
+            case '\\': out[i++] = '\\'; break;
+            case '/':  out[i++] = '/';  break;
+            case 'n':  out[i++] = '\n'; break;
+            case 'r':  out[i++] = '\r'; break;
+            case 't':  out[i++] = '\t'; break;
+            case 'b':  out[i++] = '\b'; break;
+            case 'f':  out[i++] = '\f'; break;
+            case 'u':
+                /* \uXXXX: not needed for any field we accept; drop to '?' so
+                   neither the surrogate pair nor the hex digits leak. */
+                if (p[1] && p[2] && p[3] && p[4]) p += 4;
+                out[i++] = '?';
+                break;
+            default:   out[i++] = *p;   break;
+            }
+            p++;
+        } else {
+            out[i++] = *p++;
+        }
+    }
     out[i] = '\0';
 }
 
@@ -252,7 +292,14 @@ queue_buffer(struct MHD_Connection *conn, unsigned int status,
     enum MHD_Result      ret;
 
     resp = MHD_create_response_from_buffer(size, (void *)data, mm);
-    if (!resp) return MHD_NO;
+    if (!resp) {
+        /* MUST_FREE hands ownership to MHD on success; on failure we still
+           own it and have to free it ourselves or the caller's strdup'd
+           JSON leaks. PERSISTENT/MUST_COPY buffers are caller-owned and
+           we leave them alone. */
+        if (mm == MHD_RESPMEM_MUST_FREE) free((void *)data);
+        return MHD_NO;
+    }
 
     MHD_add_response_header(resp, MHD_HTTP_HEADER_ACCESS_CONTROL_ALLOW_ORIGIN, "*");
     MHD_add_response_header(resp, MHD_HTTP_HEADER_CACHE_CONTROL, "no-store");
@@ -305,6 +352,69 @@ path_segment_safe(const char *s) {
     return 1;
 }
 
+/* Validate a local PKG path for /api/install_aip: must be exactly
+   <PATCHDL_DL_DIR>/<safe-title-id>/<safe-filename>. Rejects anything
+   outside /data/patchdl/, anything with .. or unsafe chars. */
+static int
+local_install_path_safe(const char *path) {
+    const char *prefix = PATCHDL_DL_DIR "/";
+    size_t      plen   = strlen(prefix);
+    const char *tail, *slash;
+    char        seg[64];
+    size_t      len;
+
+    if (!path || strncmp(path, prefix, plen) != 0) return 0;
+    tail  = path + plen;
+    slash = strchr(tail, '/');
+    if (!slash || slash == tail) return 0;
+    len = (size_t)(slash - tail);
+    if (len >= sizeof(seg)) return 0;
+    memcpy(seg, tail, len);
+    seg[len] = '\0';
+    if (!path_segment_safe(seg)) return 0;
+
+    tail = slash + 1;
+    if (!tail[0] || strchr(tail, '/')) return 0;
+    if (strlen(tail) >= sizeof(seg)) return 0;
+    return path_segment_safe(tail);
+}
+
+/* Whitelist of CDN hosts /api/install_uri may target. Mirrors
+   ALLOWED_HOSTS in patchdl_net.c — kept in sync by hand. */
+static const char *INSTALL_URI_HOSTS[] = {
+    "sgst.prod.dl.playstation.net",
+    "gst.prod.dl.playstation.net",
+    "gs2.ww.prod.dl.playstation.net",
+    NULL,
+};
+
+/* Validate an install URI for /api/install_uri: must be https:// to one of
+   INSTALL_URI_HOSTS (or a subdomain). Rejects file://, http://, redirects
+   to other hosts (libcurl enforces via host_allowed at fetch time). */
+static int
+install_uri_safe(const char *uri) {
+    const char *host_start, *end;
+    size_t      hlen;
+    char        host[128];
+
+    if (!uri || strncmp(uri, "https://", 8) != 0) return 0;
+    host_start = uri + 8;
+    end        = strpbrk(host_start, "/:?");
+    hlen       = end ? (size_t)(end - host_start) : strlen(host_start);
+    if (hlen == 0 || hlen >= sizeof(host)) return 0;
+    memcpy(host, host_start, hlen);
+    host[hlen] = '\0';
+
+    for (int i = 0; INSTALL_URI_HOSTS[i]; i++) {
+        size_t alen = strlen(INSTALL_URI_HOSTS[i]);
+        if (hlen == alen && !strcasecmp(host, INSTALL_URI_HOSTS[i])) return 1;
+        if (hlen > alen + 1 &&
+            host[hlen - alen - 1] == '.' &&
+            !strcasecmp(host + hlen - alen, INSTALL_URI_HOSTS[i])) return 1;
+    }
+    return 0;
+}
+
 typedef struct {
     int      fd;
     uint64_t start;
@@ -495,8 +605,9 @@ build_status_json(void) {
              "\"dns_guard\":\"Active\","
              "\"resolver\":\"Internal allowlist\","
              "\"free_space_mb\":%lld,"
-             "\"download_dir\":\"/data/patchdl (internal)\"}",
-             g_fw.str, g_fw.bin, data_free_mb());
+             "\"download_dir\":\"/data/patchdl (internal)\","
+             "\"version\":\"%s\"}",
+             g_fw.str, g_fw.bin, data_free_mb(), PATCHDL_VERSION);
     return out;
 }
 
@@ -664,6 +775,9 @@ build_titles_json(void) {
             jbuf_append_ver_or_null(&j, t->patch_title_id);
         jbuf_append(&j, ",\"patch_storage_title_id\":");
             jbuf_append_ver_or_null(&j, t->patch_storage_title_id);
+        jbuf_appendf(&j, ",\"patch_storage_match\":%s",
+                     (!t->patch_storage_title_id[0] ||
+                      !strncmp(t->patch_storage_title_id, t->title_id, 9)) ? "true" : "false");
         /* This is the target title id parsed from version.xml/manifest_url.
            CDN storage paths may use another regional/master title id; that is
            not exposed here and must not block a valid target match. */
@@ -731,6 +845,8 @@ build_downloads_json(void) {
         jbuf_append(&j, ",\"state\":");     jbuf_append_str(&j, job_state_str(job->state));
         jbuf_appendf(&j, ",\"progress\":%d", progress);
         jbuf_appendf(&j, ",\"bytes\":%lld,\"total_bytes\":%lld", bytes, total);
+        jbuf_appendf(&j, ",\"rc\":%d,\"last_curl_rc\":%d,\"last_http_code\":%ld",
+                     job->rc, job->last_curl_rc, job->last_http_code);
         jbuf_append(&j, "}");
     }
     jbuf_append(&j, "]");
@@ -745,9 +861,12 @@ build_downloads_json(void) {
    here at the next scan — not during the async install, which still reads the
    file. */
 static void
+title_pkg_path(const char *title_id, const char *patch_url,
+               char *out, size_t out_sz);
+
+static void
 cleanup_installed_download(const char *title_id, const char *patch_url) {
     char        dir[256], path[320];
-    const char *base = strrchr(patch_url, '/');
     if (!path_segment_safe(title_id))
         return;
     /* Never delete a directory the download pool still owns (a queued/active/
@@ -759,9 +878,11 @@ cleanup_installed_download(const char *title_id, const char *patch_url) {
             return;
         }
     pthread_mutex_unlock(&g_pool.mtx);
-    base = base ? base + 1 : "patch.pkg";
     snprintf(dir, sizeof(dir), "/data/patchdl/%s", title_id);
-    snprintf(path, sizeof(path), "%s/%s", dir, base);
+    /* Reuse title_pkg_path so the basename is validated the same way as on
+       download — a basename with .. or delimiters falls back to "<tid>.pkg"
+       and we don't end up unlinking outside the title directory. */
+    title_pkg_path(title_id, patch_url, path, sizeof(path));
     unlink(path);
     rmdir(dir);
 }
@@ -794,6 +915,8 @@ verxml_fetch_thread(void *arg) {
                 sizeof(t->latest_required_fw) - 1);
         strncpy(t->patch_url,          info.compatible_url,
                 sizeof(t->patch_url) - 1);
+        strncpy(t->delta_url,          info.delta_url,
+                sizeof(t->delta_url) - 1);
         strncpy(t->patch_title_id,     info.compatible_title,
                 sizeof(t->patch_title_id) - 1);
         strncpy(t->patch_storage_title_id, info.compatible_storage_title,
@@ -815,6 +938,7 @@ verxml_fetch_thread(void *arg) {
 static int
 get_title_action_info(const char *title_id, patchdl_source_t *src,
                       char *patch_url, size_t url_sz,
+                      char *delta_url, size_t durl_sz,
                       char *patch_title_id, size_t pt_sz,
                       char *patch_storage_title_id, size_t pst_sz,
                       char *content_id, size_t ci_sz,
@@ -829,6 +953,8 @@ get_title_action_info(const char *title_id, patchdl_source_t *src,
             *src = g_titles[i].source_type;
             strncpy(patch_url, g_titles[i].patch_url, url_sz - 1);
             patch_url[url_sz - 1] = '\0';
+            strncpy(delta_url, g_titles[i].delta_url, durl_sz - 1);
+            delta_url[durl_sz - 1] = '\0';
             strncpy(patch_title_id, g_titles[i].patch_title_id, pt_sz - 1);
             patch_title_id[pt_sz - 1] = '\0';
             strncpy(patch_storage_title_id, g_titles[i].patch_storage_title_id, pst_sz - 1);
@@ -871,7 +997,12 @@ set_title_enabled(struct MHD_Connection *conn, const char *title_id, int en) {
     return queue_json_owned(conn, MHD_HTTP_OK, strdup(r));
 }
 
-/* Local on-disk path a title's patch downloads to / installs from. */
+/* Local on-disk path a title's patch downloads to / installs from. The
+   basename comes from the patch_url (CDN-controlled), so it MUST be
+   validated — a malicious or corrupted version.xml could otherwise yield
+   "..", an empty string, or a path with delimiters that escape the title
+   directory when concatenated. Fallback to a deterministic per-title name
+   on any rejection so file ops still land somewhere safe. */
 static void
 title_pkg_path(const char *title_id, const char *patch_url,
                char *out, size_t out_sz) {
@@ -879,11 +1010,15 @@ title_pkg_path(const char *title_id, const char *patch_url,
     char name[192];
     size_t n;
 
-    base = base ? base + 1 : "patch.pkg";
+    base = base ? base + 1 : "";
     snprintf(name, sizeof(name), "%s", base);
     n = strlen(name);
     if (n > 5 && !strcmp(name + n - 5, ".json"))
         snprintf(name + n - 5, sizeof(name) - (n - 5), ".pkg");
+    if (!name[0] || !path_segment_safe(name)) {
+        snprintf(name, sizeof(name), "%s.pkg",
+                 path_segment_safe(title_id) ? title_id : "patch");
+    }
     snprintf(out, out_sz, "%s/%s/%s", PATCHDL_DL_DIR, title_id, name);
 }
 
@@ -1010,7 +1145,11 @@ write_job_state(const dl_job_t *job) {
    ps[] states and done_bytes. Called with the pool lock held. */
 static void
 seed_from_sidecar(dl_job_t *job) {
-    char       path[320], buf[16384], murl[768];
+    /* 8 KB sidecar buffer: 4096-piece cap × 2 hex chars / 8 bits = 1024 hex
+       chars for the bitmap, plus the JSON wrapper and the up-to-768-byte
+       manifest_url — fits with room. Halved from 16 KB to lighten the
+       per-admit stack frame on the pool worker. */
+    char       path[320], buf[8192], murl[768];
     FILE      *f;
     size_t     n;
     int        nbytes = (job->mf.count + 7) / 8;
@@ -1225,6 +1364,7 @@ admit_next(void) {
     free(q->ps);     q->ps     = NULL;
     free(q->bitmap); q->bitmap = NULL;
     q->done_bytes = 0; q->pieces_failed = 0; q->rc = 0;
+    q->last_curl_rc = 0; q->last_http_code = 0;
 
     q->mf = mf; q->ps = ps; q->bitmap = bitmap; q->fd = fd; q->total = total;
     for (int i = 0; i < mf.count; i++) q->ps[i].slot = -1;
@@ -1332,15 +1472,22 @@ dl_worker(void *arg) {
         pthread_mutex_unlock(&g_pool.mtx);
 
         /* ---- download the piece, NO lock ---- */
+        int  last_curl_rc   = 0;
+        long last_http_code = 0;
         {
             patchdl_piece_ctx_t ctx = { &g_pool.inflight_bytes[slot], abort_ptr };
             rc = patchdl_http_download_piece(url, fd, off, sz,
-                                             verify && hash[0] ? hash : NULL, &ctx);
+                                             verify && hash[0] ? hash : NULL, &ctx,
+                                             &last_curl_rc, &last_http_code);
         }
 
         pthread_mutex_lock(&g_pool.mtx);
         g_pool.inflight_bytes[slot] = 0;
         job->inflight--;
+        if (rc != 0) {
+            job->last_curl_rc   = last_curl_rc;
+            job->last_http_code = last_http_code;
+        }
         job->ps[pidx].slot = -1;
         if (my_seq != job->seq) {
             /* job cancelled/torn down under us: discard result (do not touch
@@ -1374,10 +1521,12 @@ dl_worker(void *arg) {
 /* ---------- HTTP handlers (enqueue/pause/cancel) ------------------------ */
 
 /* Enqueue a download. Returns 202 immediately; the pool admits + downloads it
-   across N connections. De-dupes by title_id; resumes a paused job. */
+   across N connections. De-dupes by title_id; resumes a paused job.
+   When patch_url is a manifest JSON and delta_url is set, downloads the DP.pkg
+   bootstrap directly (44 MB) instead of the multi-piece 66 GB split package. */
 static enum MHD_Result
 do_download(struct MHD_Connection *conn, const char *title_id,
-            patchdl_source_t src, const char *patch_url,
+            patchdl_source_t src, const char *patch_url, const char *delta_url,
             const char *name, const char *version, int enabled) {
     dl_job_t *job, *existing = NULL;
     int       count = 0, verify;
@@ -1446,10 +1595,13 @@ do_download(struct MHD_Connection *conn, const char *title_id,
     snprintf(job->title_id, sizeof job->title_id, "%s", title_id);
     snprintf(job->name, sizeof job->name, "%s", name && name[0] ? name : title_id);
     snprintf(job->version, sizeof job->version, "%s", version ? version : "");
-    snprintf(job->manifest_url, sizeof job->manifest_url, "%s", patch_url);
-    snprintf(job->dir, sizeof job->dir, "%s/%s", PATCHDL_DL_DIR, title_id);
-    title_pkg_path(title_id, patch_url, job->dest, sizeof job->dest);
-    job->is_manifest = url_is_manifest(patch_url);
+
+    {
+        snprintf(job->manifest_url, sizeof job->manifest_url, "%s", patch_url);
+        snprintf(job->dir, sizeof job->dir, "%s/%s", PATCHDL_DL_DIR, title_id);
+        title_pkg_path(title_id, patch_url, job->dest, sizeof job->dest);
+        job->is_manifest = url_is_manifest(patch_url);
+    }
     job->verify = verify;
     job->state = JOB_QUEUED;
     job->fd = -1;
@@ -1539,10 +1691,10 @@ do_cancel(struct MHD_Connection *conn, const char *title_id) {
 
 static enum MHD_Result
 do_install(struct MHD_Connection *conn, const char *title_id,
-           patchdl_source_t src, const char *patch_url,
+           patchdl_source_t src, const char *patch_url, const char *delta_url,
            const char *patch_title_id, const char *patch_storage_title_id,
            const char *content_id, int enabled) {
-    char dest[320], msg[256], resp[640];
+    char dest[320], msg[256], resp[720];
     int  rc;
 
     if (!enabled)
@@ -1555,13 +1707,11 @@ do_install(struct MHD_Connection *conn, const char *title_id,
         return queue_json(conn, MHD_HTTP_FORBIDDEN,
                           "{\"ok\":false,\"reason\":\"install_not_allowed_for_source\"}");
 
-    if (!patch_url[0])
+    if (!patch_url[0] && !delta_url[0])
         return queue_json(conn, MHD_HTTP_CONFLICT,
                           "{\"ok\":false,\"reason\":\"no_compatible_patch\"}");
 
-    /* GUARD (app layer): the version.xml target title id must match the game.
-       CDN storage under a different regional/master id is valid and has
-       already been normalized by patchdl_verxml. */
+    /* GUARD (app layer): the version.xml target title id must match the game. */
     if (patch_title_id[0] && strncmp(patch_title_id, title_id, 9) != 0) {
         snprintf(resp, sizeof(resp),
                  "{\"ok\":false,\"reason\":\"patch_title_mismatch\","
@@ -1570,10 +1720,38 @@ do_install(struct MHD_Connection *conn, const char *title_id,
         return queue_json_owned(conn, MHD_HTTP_CONFLICT, strdup(resp));
     }
 
+    /* Shared-master: CDN stores the patch under a different regional title id.
+       The assembled PKG (from the manifest download) embeds the game's own
+       content_id, so AppInstUtil routes the install to the right title slot.
+       sceAppInstUtilInstallByPackage is unavailable in our process context
+       (0x80B21163), so only sceAppInstUtilAppInstallPkg works here. */
+    if (patch_storage_title_id[0] &&
+        strncmp(patch_storage_title_id, title_id, 9) != 0) {
+        char        assembled_local[320] = {0};
+        struct stat assembled_st;
+
+        title_pkg_path(title_id, patch_url, assembled_local, sizeof(assembled_local));
+        if (!assembled_local[0] || stat(assembled_local, &assembled_st) != 0) {
+            snprintf(resp, sizeof(resp),
+                     "{\"ok\":false,\"reason\":\"pkg_not_downloaded\","
+                     "\"hint\":\"download_required\",\"path\":\"%.319s\"}",
+                     assembled_local);
+            return queue_json_owned(conn, MHD_HTTP_CONFLICT, strdup(resp));
+        }
+
+        rc = patchdl_install_app_pkg(assembled_local, title_id, content_id,
+                                     msg, sizeof(msg));
+        snprintf(resp, sizeof(resp),
+                 "{\"ok\":%s,\"rc\":%d,\"message\":\"%s\",\"path\":\"%.319s\"}",
+                 rc == 0 ? "true" : "false", rc, msg, assembled_local);
+        return queue_json_owned(conn,
+                                rc == 0 ? MHD_HTTP_OK : MHD_HTTP_BAD_GATEWAY,
+                                strdup(resp));
+    }
+
     title_pkg_path(title_id, patch_url, dest, sizeof(dest));
 
-    rc = patchdl_install_local_pkg(dest, title_id, patch_storage_title_id,
-                                   content_id, msg, sizeof(msg));
+    rc = patchdl_install_app_pkg(dest, title_id, content_id, msg, sizeof(msg));
     snprintf(resp, sizeof(resp),
              "{\"ok\":%s,\"rc\":%d,\"message\":\"%s\",\"path\":\"%s\"}",
              rc == 0 ? "true" : "false", rc, msg, dest);
@@ -1611,6 +1789,7 @@ handle_title_action(struct MHD_Connection *conn, const char *url) {
     char             title_id[32];
     char             action[24];
     char             patch_url[512] = {0};
+    char             delta_url[512] = {0};
     char             patch_title_id[16] = {0};
     char             patch_storage_title_id[16] = {0};
     char             content_id[64] = {0};
@@ -1631,7 +1810,9 @@ handle_title_action(struct MHD_Connection *conn, const char *url) {
     if (!path_segment_safe(title_id))
         return queue_text(conn, MHD_HTTP_FORBIDDEN, "forbidden");
 
-    if (!get_title_action_info(title_id, &src, patch_url, sizeof(patch_url),
+    if (!get_title_action_info(title_id, &src,
+                               patch_url, sizeof(patch_url),
+                               delta_url, sizeof(delta_url),
                                patch_title_id, sizeof(patch_title_id),
                                patch_storage_title_id,
                                sizeof(patch_storage_title_id),
@@ -1648,7 +1829,8 @@ handle_title_action(struct MHD_Connection *conn, const char *url) {
         return set_title_enabled(conn, title_id, 0);
 
     if (!strcmp(action, "download"))
-        return do_download(conn, title_id, src, patch_url, name, version, enabled);
+        return do_download(conn, title_id, src, patch_url, delta_url,
+                           name, version, enabled);
 
     if (!strcmp(action, "cancel"))
         return do_cancel(conn, title_id);
@@ -1661,8 +1843,9 @@ handle_title_action(struct MHD_Connection *conn, const char *url) {
                           "{\"ok\":true,\"queued\":true,\"action\":\"check\"}");
 
     if (!strcmp(action, "install"))
-        return do_install(conn, title_id, src, patch_url, patch_title_id,
-                          patch_storage_title_id, content_id, enabled);
+        return do_install(conn, title_id, src, patch_url, delta_url,
+                          patch_title_id, patch_storage_title_id,
+                          content_id, enabled);
 
     return queue_text(conn, MHD_HTTP_NOT_FOUND, "not found");
 }
@@ -1670,10 +1853,15 @@ handle_title_action(struct MHD_Connection *conn, const char *url) {
 /* ---------- POST body accumulation ------------------------------------- */
 
 /* MHD delivers a POST body across several callback invocations. We stash a
-   growing buffer in con_cls and dispatch once the body is complete. */
+   growing buffer in con_cls and dispatch once the body is complete. The
+   largest legitimate body we accept is the config JSON or a small install
+   request — a few hundred bytes; 64 KiB leaves ample headroom while keeping
+   a misbehaving LAN client from forcing unbounded allocations. */
+#define PATCHDL_POST_MAX_BYTES (64 * 1024)
 typedef struct {
     char  *data;
     size_t len;
+    int    oversized;
 } post_body_t;
 
 static void
@@ -1692,8 +1880,14 @@ static enum MHD_Result
 handle_config_post(struct MHD_Connection *conn, const char *body) {
     char pol[8];
     int  mc;
+    int  tile_just_enabled = 0;
 
     json_get_str(body, "default_policy", pol, sizeof(pol));
+    /* Only the two real values are accepted; anything else is silently
+       dropped so a malformed POST can't corrupt config.json or the JSON
+       we later round-trip out of /api/config. */
+    if (pol[0] && strcmp(pol, "allow") != 0 && strcmp(pol, "deny") != 0)
+        pol[0] = '\0';
 
     pthread_mutex_lock(&g_mutex);
     if (pol[0]) {
@@ -1706,8 +1900,12 @@ handle_config_post(struct MHD_Connection *conn, const char *body) {
         json_get_bool(body, "delete_pkg_after_install", g_cfg.delete_pkg_after_install);
     g_cfg.verify_downloads =
         json_get_bool(body, "verify_downloads", g_cfg.verify_downloads);
-    g_cfg.home_shortcut =
-        json_get_bool(body, "home_shortcut", g_cfg.home_shortcut);
+    {
+        int prev_tile = g_cfg.home_shortcut;
+        g_cfg.home_shortcut =
+            json_get_bool(body, "home_shortcut", g_cfg.home_shortcut);
+        tile_just_enabled = (!prev_tile && g_cfg.home_shortcut);
+    }
     g_cfg.max_connections =
         json_get_int(body, "max_connections", g_cfg.max_connections);
     if (g_cfg.max_connections < 1) g_cfg.max_connections = 1;
@@ -1727,6 +1925,16 @@ handle_config_post(struct MHD_Connection *conn, const char *body) {
     pthread_mutex_unlock(&g_pool.mtx);
 
     save_config();
+
+    /* Trigger the tile install when the toggle just flipped on. Best-effort —
+       the config save is already committed; we don't want a tile error to
+       roll that back. Stat-guard inside the helper makes repeated calls a
+       no-op, so a save without flipping the toggle still costs nothing. */
+    if (tile_just_enabled) {
+        char tile_msg[256];
+        (void)patchdl_tile_install_if_needed(tile_msg, sizeof(tile_msg));
+    }
+
     return queue_json_owned(conn, MHD_HTTP_OK, build_config_json());
 }
 
@@ -1750,23 +1958,103 @@ on_request(void *cls, struct MHD_Connection *conn, const char *url,
         }
 
         if (*upload_data_size) {            /* a body chunk: append it */
-            char *n = realloc(pb->data, pb->len + *upload_data_size + 1);
-            if (n) {
-                memcpy(n + pb->len, upload_data, *upload_data_size);
-                pb->len += *upload_data_size;
-                n[pb->len] = '\0';
-                pb->data = n;
+            if (!pb->oversized &&
+                pb->len + *upload_data_size <= PATCHDL_POST_MAX_BYTES) {
+                char *n = realloc(pb->data, pb->len + *upload_data_size + 1);
+                if (n) {
+                    memcpy(n + pb->len, upload_data, *upload_data_size);
+                    pb->len += *upload_data_size;
+                    n[pb->len] = '\0';
+                    pb->data = n;
+                } else {
+                    pb->oversized = 1;
+                }
+            } else {
+                pb->oversized = 1;     /* drop further chunks to bound RAM */
             }
             *upload_data_size = 0;
             return MHD_YES;
         }
 
+        if (pb->oversized)
+            return queue_json(conn, MHD_HTTP_CONTENT_TOO_LARGE,
+                              "{\"ok\":false,\"reason\":\"body_too_large\"}");
         /* final call: the full body (if any) is in pb->data */
         const char *body = pb->data ? pb->data : "";
         if (!strcmp(url, "/api/config"))
             return handle_config_post(conn, body);
         if (!strncmp(url, "/api/titles/", 12))
             return handle_title_action(conn, url);
+        if (!strcmp(url, "/api/install_uri")) {
+            char uri[768] = {0}, cid[64] = {0}, tid[32] = {0};
+            char msg[256], resp[1100];
+            int rc;
+            json_get_str(body, "uri", uri, sizeof(uri));
+            json_get_str(body, "content_id", cid, sizeof(cid));
+            json_get_str(body, "title_id", tid, sizeof(tid));
+            if (!uri[0])
+                return queue_json(conn, MHD_HTTP_BAD_REQUEST,
+                                  "{\"ok\":false,\"reason\":\"uri required\"}");
+            if (!install_uri_safe(uri))
+                return queue_json(conn, MHD_HTTP_FORBIDDEN,
+                                  "{\"ok\":false,\"reason\":\"uri_not_allowed\","
+                                  "\"hint\":\"https:// only, host must be Sony CDN\"}");
+            if (tid[0] && !path_segment_safe(tid))
+                return queue_json(conn, MHD_HTTP_BAD_REQUEST,
+                                  "{\"ok\":false,\"reason\":\"title_id_unsafe\"}");
+            if (cid[0] && !path_segment_safe(cid))
+                return queue_json(conn, MHD_HTTP_BAD_REQUEST,
+                                  "{\"ok\":false,\"reason\":\"content_id_unsafe\"}");
+            rc = patchdl_install_by_uri(uri, tid[0] ? tid : NULL,
+                                        cid[0] ? cid : NULL, msg, sizeof(msg));
+            snprintf(resp, sizeof(resp),
+                     "{\"ok\":%s,\"rc\":%d,\"rc_hex\":\"0x%08x\",\"message\":\"%s\","
+                     "\"uri\":\"%.511s\",\"content_id\":\"%.63s\",\"title_id\":\"%.31s\"}",
+                     rc == 0 ? "true" : "false", rc, (unsigned)rc, msg,
+                     uri, cid, tid);
+            return queue_json_owned(conn, rc == 0 ? MHD_HTTP_OK : MHD_HTTP_BAD_GATEWAY,
+                                    strdup(resp));
+        }
+        if (!strcmp(url, "/api/install_aip")) {
+            char path[768] = {0}, cid[64] = {0}, tid[32] = {0};
+            char msg[256], resp[1100];
+            int rc;
+            json_get_str(body, "path", path, sizeof(path));
+            json_get_str(body, "content_id", cid, sizeof(cid));
+            json_get_str(body, "title_id", tid, sizeof(tid));
+            if (!path[0])
+                return queue_json(conn, MHD_HTTP_BAD_REQUEST,
+                                  "{\"ok\":false,\"reason\":\"path required\"}");
+            if (!local_install_path_safe(path))
+                return queue_json(conn, MHD_HTTP_FORBIDDEN,
+                                  "{\"ok\":false,\"reason\":\"path_not_allowed\","
+                                  "\"hint\":\"must be " PATCHDL_DL_DIR
+                                  "/<title_id>/<filename>\"}");
+            if (tid[0] && !path_segment_safe(tid))
+                return queue_json(conn, MHD_HTTP_BAD_REQUEST,
+                                  "{\"ok\":false,\"reason\":\"title_id_unsafe\"}");
+            if (cid[0] && !path_segment_safe(cid))
+                return queue_json(conn, MHD_HTTP_BAD_REQUEST,
+                                  "{\"ok\":false,\"reason\":\"content_id_unsafe\"}");
+            rc = patchdl_install_app_pkg(path, tid[0] ? tid : NULL,
+                                         cid[0] ? cid : NULL, msg, sizeof(msg));
+            snprintf(resp, sizeof(resp),
+                     "{\"ok\":%s,\"rc\":%d,\"rc_hex\":\"0x%08x\",\"message\":\"%s\","
+                     "\"path\":\"%.511s\",\"content_id\":\"%.63s\",\"title_id\":\"%.31s\"}",
+                     rc == 0 ? "true" : "false", rc, (unsigned)rc, msg,
+                     path, cid, tid);
+            return queue_json_owned(conn, rc == 0 ? MHD_HTTP_OK : MHD_HTTP_BAD_GATEWAY,
+                                    strdup(resp));
+        }
+        if (!strcmp(url, "/api/install_tile")) {
+            char msg[256], resp[320];
+            int  rc = patchdl_tile_install_if_needed(msg, sizeof(msg));
+            snprintf(resp, sizeof(resp),
+                     "{\"ok\":%s,\"rc\":%d,\"message\":\"%s\"}",
+                     rc == 0 ? "true" : "false", rc, msg);
+            return queue_json_owned(conn, rc == 0 ? MHD_HTTP_OK : MHD_HTTP_BAD_GATEWAY,
+                                    strdup(resp));
+        }
         return queue_text(conn, MHD_HTTP_NOT_FOUND, "not found");
     }
 
@@ -1804,21 +2092,47 @@ on_request(void *cls, struct MHD_Connection *conn, const char *url,
         return queue_json_owned(conn, MHD_HTTP_OK, strdup(p));
     }
 
-    if (!strcmp(url, "/api/pkgdiag"))
-        return queue_json(conn, MHD_HTTP_OK, g_pkg_diag_json);
+    if (!strcmp(url, "/api/installstatus")) {
+        char p[1024];
+        patchdl_install_status_json(p, sizeof(p));
+        return queue_json_owned(conn, MHD_HTTP_OK, strdup(p));
+    }
+
+    if (!strcmp(url, "/api/debug_install")) {
+        char p[512];
+        patchdl_install_debug_state(p, sizeof(p));
+        return queue_json_owned(conn, MHD_HTTP_OK, strdup(p));
+    }
+
+    if (!strcmp(url, "/api/pkgdiag")) {
+        /* Snapshot under the lock — otherwise MHD would read g_pkg_diag_json
+           in-place (RESPMEM_PERSISTENT) while record_pkg_diag is mid-snprintf,
+           producing a torn read or a missing NUL terminator. */
+        char snap[sizeof(g_pkg_diag_json)];
+        pthread_mutex_lock(&g_mutex);
+        memcpy(snap, g_pkg_diag_json, sizeof(snap));
+        pthread_mutex_unlock(&g_mutex);
+        snap[sizeof(snap) - 1] = '\0';
+        return queue_json_owned(conn, MHD_HTTP_OK, strdup(snap));
+    }
 
     /* Read-only diagnostic: re-fetch the patch manifest for a title (PatchDL can
        bypass the DNS block) and dump each piece's offset/size/SHA-256 so the
        assembled .pkg can be verified against Sony's own hashes. No install. */
     if (!strncmp(url, "/api/manifest/", 14)) {
         const char      *tid = url + 14;
-        char             purl[768] = {0}, pti[32], psti[32], cid[64], nm[128], ver[16];
+        char             purl[768] = {0}, durl_[512] = {0};
+        char             pti[32], psti[32], cid[64], nm[128], ver[16];
         patchdl_source_t src;
         int              en;
         patchdl_manifest_t mf;
         jbuf_t           j = {0};
 
-        if (!get_title_action_info(tid, &src, purl, sizeof purl, pti, sizeof pti,
+        if (!path_segment_safe(tid))
+            return queue_text(conn, MHD_HTTP_FORBIDDEN, "forbidden");
+        if (!get_title_action_info(tid, &src, purl, sizeof purl,
+                                   durl_, sizeof durl_,
+                                   pti, sizeof pti,
                                    psti, sizeof psti, cid, sizeof cid,
                                    nm, sizeof nm, ver, sizeof ver, &en) || !purl[0])
             return queue_json(conn, MHD_HTTP_NOT_FOUND,
@@ -1845,14 +2159,19 @@ on_request(void *cls, struct MHD_Connection *conn, const char *url,
        install. Hashing runs on-device (SSD), so no multi-GB transfer. */
     if (!strncmp(url, "/api/pkgverify/", 15)) {
         const char        *tid = url + 15;
-        char               purl[768] = {0}, pti[32], psti[32], cid[64], nm[128], ver[16];
+        char               purl[768] = {0}, durl_[512] = {0};
+        char               pti[32], psti[32], cid[64], nm[128], ver[16];
         char               dest[320];
         patchdl_source_t   src;
         int                en, fd, okc = 0, badc = 0, first_bad = -1;
         patchdl_manifest_t mf;
         jbuf_t             j = {0};
 
-        if (!get_title_action_info(tid, &src, purl, sizeof purl, pti, sizeof pti,
+        if (!path_segment_safe(tid))
+            return queue_text(conn, MHD_HTTP_FORBIDDEN, "forbidden");
+        if (!get_title_action_info(tid, &src, purl, sizeof purl,
+                                   durl_, sizeof durl_,
+                                   pti, sizeof pti,
                                    psti, sizeof psti, cid, sizeof cid,
                                    nm, sizeof nm, ver, sizeof ver, &en) || !purl[0])
             return queue_json(conn, MHD_HTTP_NOT_FOUND,
@@ -1893,12 +2212,17 @@ on_request(void *cls, struct MHD_Connection *conn, const char *url,
        (installed app) ids, to expose the cross-region linkage. No install. */
     if (!strncmp(url, "/api/pkgmeta/", 13)) {
         const char      *tid = url + 13;
-        char             purl[768] = {0}, pti[32], psti[32], cid[64], nm[128], ver[16];
+        char             purl[768] = {0}, durl_[512] = {0};
+        char             pti[32], psti[32], cid[64], nm[128], ver[16];
         char             dest[320], ecid[64] = {0}, etid[48] = {0}, msg[128], resp[900];
         patchdl_source_t src;
         int              en, is_app = 0, rc;
 
-        if (!get_title_action_info(tid, &src, purl, sizeof purl, pti, sizeof pti,
+        if (!path_segment_safe(tid))
+            return queue_text(conn, MHD_HTTP_FORBIDDEN, "forbidden");
+        if (!get_title_action_info(tid, &src, purl, sizeof purl,
+                                   durl_, sizeof durl_,
+                                   pti, sizeof pti,
                                    psti, sizeof psti, cid, sizeof cid,
                                    nm, sizeof nm, ver, sizeof ver, &en) || !purl[0])
             return queue_json(conn, MHD_HTTP_NOT_FOUND, "{\"error\":\"unknown title\"}");
@@ -1908,9 +2232,14 @@ on_request(void *cls, struct MHD_Connection *conn, const char *url,
         snprintf(resp, sizeof resp,
                  "{\"ok\":%s,\"pkg_content_id\":\"%s\",\"pkg_title_id\":\"%s\","
                  "\"is_app\":%s,\"target_content_id\":\"%s\",\"target_title_id\":\"%s\","
-                 "\"storage_title_id\":\"%s\",\"msg\":\"%s\"}",
+                 "\"storage_title_id\":\"%s\",\"installable\":%s,\"install_plan\":\"%s\","
+                 "\"msg\":\"%s\"}",
                  rc == 0 ? "true" : "false", ecid, etid, is_app ? "true" : "false",
-                 cid, tid, psti, msg);
+                 cid, tid, psti,
+                 (psti[0] && strncmp(psti, tid, 9) != 0) ? "false" : "true",
+                 (psti[0] && strncmp(psti, tid, 9) != 0) ?
+                    "cross_region_storage_unsupported" : "installbypackage",
+                 msg);
         return queue_json_owned(conn, MHD_HTTP_OK, strdup(resp));
     }
 
@@ -1979,6 +2308,15 @@ patchdl_websrv_start(unsigned short port) {
         g_titles[i].enabled = (g_titles[i].source_type != PATCHDL_SOURCE_UNKNOWN);
     load_config();
 
+    /* If the user opted into a home-screen tile, refresh it now. The helper
+       is stat-guarded — when nothing changed on disk it's a no-op, so the
+       cost on subsequent startups is two file reads. Best-effort: never
+       block startup on a tile install failure. */
+    if (g_cfg.home_shortcut) {
+        char tile_msg[256];
+        (void)patchdl_tile_install_if_needed(tile_msg, sizeof(tile_msg));
+    }
+
     /* Flag titles that have a partial download on disk so the UI can offer
        Resume after a reboot. */
     detect_resumable_partials();
@@ -2023,6 +2361,16 @@ patchdl_websrv_start(unsigned short port) {
         MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_THREAD_PER_CONNECTION,
         port, NULL, NULL, &on_request, NULL,
         MHD_OPTION_NOTIFY_COMPLETED, request_completed, NULL,
+        /* DoS guards + RAM caps: the PS5 process budget is a few hundred MB
+           and the default pthread stack on this libc is multiple MB. We're
+           a single-user UI — 8 concurrent connections is plenty for the
+           SSE poll + a couple of AJAX, and 256 KB per worker is more than
+           enough for our handlers (largest stack use is a 16 KB sidecar
+           buffer in seed_from_sidecar). */
+        MHD_OPTION_CONNECTION_LIMIT,        (unsigned int)8,
+        MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int)8,
+        MHD_OPTION_CONNECTION_TIMEOUT,      (unsigned int)30,
+        MHD_OPTION_THREAD_STACK_SIZE,       (size_t)(512 * 1024),
         MHD_OPTION_END);
 
     if (!web_daemon) {
@@ -2039,6 +2387,11 @@ patchdl_websrv_start(unsigned short port) {
         return -1;
     }
 
+    /* Lock further patchdl_scan / patchdl_scan_debug_json calls — both do a
+       process-wide vnode swap that is only safe before MHD worker threads
+       come up. After this point the only scan happens internally above. */
+    patchdl_scan_lock();
+
     /* Start background verxml fetch — joinable so patchdl_websrv_stop can wait
        for it before freeing g_titles (it reads g_titles across blocking queries). */
     g_verxml_stop = 0;
@@ -2070,11 +2423,19 @@ patchdl_websrv_stop(void) {
     for (int s = 0; s < g_pool.n_workers; s++)
         pthread_join(g_pool.workers[s], NULL);
     g_pool.n_workers = 0;
+    /* Free every job still in the pool list. Workers have joined so nobody
+       else touches the list. free_job_locked unlinks + frees mf.pieces[i].url,
+       mf.pieces, ps, bitmap, and closes the fd. */
+    pthread_mutex_lock(&g_pool.mtx);
+    while (g_pool.jobs) free_job_locked(g_pool.jobs);
+    pthread_mutex_unlock(&g_pool.mtx);
     patchdl_net_global_cleanup();
 
     pthread_mutex_lock(&g_mutex);
     patchdl_scan_free(g_titles, g_title_count);
     g_titles      = NULL;
     g_title_count = 0;
+    free(g_debug_json);
+    g_debug_json  = NULL;
     pthread_mutex_unlock(&g_mutex);
 }

src/patchdl_websrv.h

@@ -1,3 +1,12 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 int patchdl_websrv_start(unsigned short port);

web/README.md

@@ -16,6 +16,9 @@ GET  /api/config
 POST /api/config
 GET  /api/titles
 GET  /api/downloads
+GET  /api/installstatus
+GET  /api/pkgmeta/:title_id
+GET  /api/pkgverify/:title_id
 POST /api/titles/:title_id/check
 POST /api/titles/:title_id/download
 POST /api/titles/:title_id/install
@@ -88,3 +91,8 @@ For PS5 game updates, the backend may turn a Sony `manifest_url` into a merged
 local `.pkg` by downloading all manifest pieces. The `delta_url` `*-DP.pkg` is
 not shown as a separate user action because it can bootstrap the storage/master
 title instead of the installed regional target.
+
+If `patch_storage_match` is false, the UI keeps download/verify available but
+does not offer install or auto-install. Those shared-master packages are signed
+for a different storage title id and cannot be retargeted by standalone
+AppInstUtil on firmware 11.60.

web/app.js

@@ -3,6 +3,7 @@ const API = {
   titles: "/api/titles",
   config: "/api/config",
   downloads: "/api/downloads",
+  installStatus: "/api/installstatus",
   action: (titleId, action) => `/api/titles/${encodeURIComponent(titleId)}/${action}`,
 };
 
@@ -49,6 +50,7 @@ const fallback = {
       installed_version: "01.032.000", compatible_version: "01.041.000",
       latest_version: "01.041.000", latest_required_fw: "11.60",
       source_type: "official", source_path: "/system_ex/app/PPSA01628_00",
+      patch_storage_match: true,
       mount_from: "/dev/ssd0.system_ex", enabled: true, status: "available",
     },
     {
@@ -57,6 +59,7 @@ const fallback = {
       installed_version: "01.004.000", compatible_version: "01.004.000",
       latest_version: "01.004.000", latest_required_fw: "10.01",
       source_type: "external", source_path: "/system_data/priv/appmeta/external/PPSA01284_00",
+      patch_storage_match: true,
       mount_from: "/mnt/ext0/user/app/PPSA01284_00", enabled: true, status: "up_to_date",
     },
     {
@@ -65,6 +68,7 @@ const fallback = {
       installed_version: "01.000.000", compatible_version: "01.006.000",
       latest_version: "01.009.000", latest_required_fw: "12.00",
       source_type: "shadowmount", source_path: "/system_ex/app/PPSA90001_00",
+      patch_storage_match: true,
       mount_from: "/mnt/usb0/itemzflow/Shadowmounted Test Title", enabled: true, status: "available",
     },
   ],
@@ -79,12 +83,13 @@ let state = {
   downloads: fallback.downloads,
   logs: fallback.logs,
   view: "games",
-  filter: "all",
+  filter: "updatable",
   query: "",
   usingFallback: false,
 };
 
 let downloadPollTimer = null;
+let installPollTimer = null;
 let emptyPolls = 0;
 const dlMeta = {}; // per-title speed tracking: { bytes, t, speed }
 
@@ -121,6 +126,16 @@ function bindElements() {
     connMinus: document.getElementById("connMinus"),
     connPlus: document.getElementById("connPlus"),
     refreshBtn: document.getElementById("refreshBtn"),
+    updateAllBtn: document.getElementById("updateAllBtn"),
+    brandVersion: document.getElementById("brandVersion"),
+    globalDl:         document.getElementById("globalDl"),
+    globalDlState:    document.getElementById("globalDlState"),
+    globalDlName:     document.getElementById("globalDlName"),
+    globalDlPosition: document.getElementById("globalDlPosition"),
+    globalDlPct:      document.getElementById("globalDlPct"),
+    globalDlSpeed:    document.getElementById("globalDlSpeed"),
+    globalDlEta:      document.getElementById("globalDlEta"),
+    globalDlBar:      document.getElementById("globalDlBar"),
     saveBtn: document.getElementById("saveBtn"),
     clearLogBtn: document.getElementById("clearLogBtn"),
     toast: document.getElementById("toast"),
@@ -150,6 +165,7 @@ function bindEvents() {
   });
 
   els.refreshBtn.addEventListener("click", loadInitialData);
+  if (els.updateAllBtn) els.updateAllBtn.addEventListener("click", updateAll);
   els.saveBtn.addEventListener("click", saveConfig);
   els.clearLogBtn.addEventListener("click", () => { state.logs = []; renderLogs(); });
   if (els.connMinus)
@@ -201,6 +217,7 @@ async function loadInitialData() {
   if (downloads.some((j) => j.state === "active" || j.state === "queued") ||
       state.titles.some((g) => g._localDownloading))
     startDownloadPolling();
+  if (state.titles.some((g) => g.installing)) startInstallPolling();
   showToast(state.usingFallback ? "Demo data loaded. API is not reachable yet." : "Data refreshed.");
 }
 
@@ -232,6 +249,8 @@ function renderStatus() {
   els.downloadDirValue.textContent = state.status.download_dir || state.config.download_dir || "Download target";
   if (els.railFw) els.railFw.textContent = `FW ${state.status.firmware || "--"}`;
   if (els.railSpace) els.railSpace.textContent = `${space} free`;
+  if (els.brandVersion)
+    els.brandVersion.textContent = state.status.version ? `v${state.status.version}` : "v--";
 }
 
 const CONN_MIN = 1, CONN_MAX = 16;
@@ -288,6 +307,7 @@ function renderSettings() {
 /* ---------------- games ---------------- */
 
 function renderGames() {
+  renderGlobalStatus();
   const visible = state.titles.filter(matchesFilter).filter(matchesQuery);
   els.gameGrid.replaceChildren();
 
@@ -303,12 +323,17 @@ function renderGames() {
 
 // Mutually-exclusive bucket per game for the filter chips.
 function gameCategory(game) {
+  // Updating is the queue — jobs waiting for a pool slot. An actively
+  // downloading game stays under Updatable so you don't lose sight of it
+  // while drilling into the queue; same for paused (the user knows where
+  // it is and can resume from the card) and installing.
+  if (game._jobState === "queued") return "updating";
   // checking is transient (version lookup still running); keep it visible under
   // Updatable rather than letting it fall out of every specific filter.
-  if (game.installing || game.downloading || game.status === "checking") return "updatable";
+  if (game.status === "checking") return "updatable";
   if (game.patch_title_match === false) return "blocked";
-  if (!sourcePolicy(game).allow_install) return "blocked";
-  if (game.status === "available") return "updatable";
+  if (game.status === "available" && isDownloadAllowed(game)) return "updatable";
+  if (!sourcePolicy(game).allow_install && !sourcePolicy(game).allow_download) return "blocked";
   if (game.status === "incompatible_fw") return "needsfw";
   return "uptodate";
 }
@@ -353,9 +378,11 @@ function createGameCard(game) {
       <span>${escapeHtml(game.content_id || "")}</span>
     </div>
     <div class="pills">
-      ${game.downloading ? `<span class="pill live">Downloading</span>` : ""}
+      ${game.downloading && game._jobState === "queued" ? `<span class="pill">Queued</span>` : ""}
+      ${game.downloading && game._jobState !== "queued" ? `<span class="pill live">Downloading</span>` : ""}
       ${game.resumable && !game.downloading ? `<span class="pill warn">Paused</span>` : ""}
       ${statusPill(game)}
+      ${storagePill(game)}
       ${sourcePill(game)}
     </div>
     <div class="versions">
@@ -391,6 +418,15 @@ function createGameCard(game) {
       <div class="progress-meta">${progressMetaHtml(d)}</div>
     `;
     card.appendChild(prog);
+  } else if (game.installing) {
+    const pct = Math.max(0, Math.min(100, Number(game.installProgress) || 0));
+    const note = document.createElement("div");
+    note.className = "card-progress";
+    note.innerHTML = `
+      <div class="progress"><i style="width:${pct}%"></i></div>
+      <div class="progress-meta">${installProgressHtml(game)}</div>
+    `;
+    card.appendChild(note);
   } else if (game.resumable && game.partial_bytes > 0) {
     // ---- paused partial (survived a reboot) ----
     const note = document.createElement("div");
@@ -433,13 +469,14 @@ function primaryButton(game) {
   if (game.installing) return { label: "Installing…", variant: "ghost", disabled: true };
   if (game.downloading) return { label: "Pause", action: "pause", variant: "pause", hint: "Pause the download (keeps what was downloaded)." };
   if (game.patch_title_match === false) return null;
-  if (!isInstallAllowed(game)) return null;
-  if (game.resumable)
+  if (game.resumable && isDownloadAllowed(game))
     return { label: "Resume", action: "download", variant: "update", hint: "Continue the paused download where it stopped." };
-  if (game.downloaded && game.status === "available")
+  if (game.downloaded && game.status === "available" && isInstallAllowed(game))
     return { label: "Install", action: "install", variant: "update", hint: "Install the downloaded patch (modifies the game)." };
+  if (game.downloaded && game.status === "available") return null;
   if (game.status !== "available") return null;
-  return state.config.install_after_download
+  if (!isDownloadAllowed(game)) return null;
+  return state.config.install_after_download && isInstallAllowed(game)
     ? { label: "Update", action: "update", variant: "update", hint: "Download and install the update." }
     : { label: "Download", action: "download", variant: "update", hint: "Download the patch internally." };
 }
@@ -463,6 +500,10 @@ function statusPill(game) {
   return `<span class="pill">No patch info</span>`;
 }
 
+function storagePill(game) {
+  return hasSharedStorage(game) ? `<span class="pill warn">Shared master</span>` : "";
+}
+
 function sourcePill(game) {
   const info = sourceInfo(game);
   return `<span class="pill ${info.className}">${escapeHtml(info.label)}</span>`;
@@ -493,6 +534,16 @@ function progressMetaHtml(d) {
   return parts.join("");
 }
 
+function installProgressHtml(game) {
+  const status = game.installStatus || "waiting";
+  const done = Number(game.installDone) || 0;
+  const total = Number(game.installTotal) || 0;
+  const parts = [`<span>Status <b>${escapeHtml(status)}</b></span>`];
+  if (total > 0) parts.push(`<span><b>${formatBytes(done)}</b> / ${formatBytes(total)}</span>`);
+  parts.push(`<span><b>${Math.max(0, Math.min(100, Number(game.installProgress) || 0))}%</b></span>`);
+  return parts.join("");
+}
+
 function startDownloadPolling() {
   emptyPolls = 0;
   if (downloadPollTimer) return;
@@ -521,9 +572,11 @@ function reconcileFromJobs(jobs) {
         g._localDownloading = false;
       }
       if (g.downloading && !g._localDownloading) g.downloading = false;
+      g._jobState = null;
       return;
     }
     g._localDownloading = false; // the pool now tracks it
+    g._jobState = j.state;
     if (j.state === "active" || j.state === "queued") {
       g.downloading = true;
       g.resumable = false;
@@ -538,7 +591,8 @@ function reconcileFromJobs(jobs) {
       g.resumable = false;
       g.downloaded = true;
       g._wasActive = false;
-      if (state.config.install_after_download && !g.installing && !g._autoInstalled) {
+      if (state.config.install_after_download && isInstallAllowed(g) &&
+          !g.installing && !g._autoInstalled) {
         g._autoInstalled = true;
         doInstall(g);
       }
@@ -558,6 +612,53 @@ function reconcileFromJobs(jobs) {
   });
 }
 
+function startInstallPolling() {
+  if (installPollTimer) return;
+  installPollTimer = setInterval(refreshInstallStatus, 2000);
+  refreshInstallStatus();
+}
+
+function stopInstallPolling() {
+  if (!installPollTimer) return;
+  clearInterval(installPollTimer);
+  installPollTimer = null;
+}
+
+async function refreshInstallStatus() {
+  let s;
+  try {
+    const response = await fetch(API.installStatus, { cache: "no-store" });
+    if (!response.ok) throw new Error(`HTTP ${response.status}`);
+    s = await response.json();
+  } catch (error) {
+    return;
+  }
+
+  if (!s || !s.active) {
+    if (!state.titles.some((g) => g.installing)) stopInstallPolling();
+    return;
+  }
+
+  const titleId = s.target_title_id || "";
+  const game = state.titles.find((g) => g.title_id === titleId || g.title_id.slice(0, 9) === titleId.slice(0, 9));
+  if (!game) return;
+
+  game.installing = !s.terminal;
+  game.installStatus = s.status || "running";
+  game.installProgress = Number(s.progress) || 0;
+  game.installDone = Number(s.downloaded_size) || 0;
+  game.installTotal = Number(s.total_size) || 0;
+  renderGames();
+
+  if (s.terminal) {
+    const ok = s.status === "playable";
+    state.logs.push(`[${timeNow()}] Install ${ok ? "completed" : "stopped"} for ${game.title_id}: ${s.status || "unknown"}${s.error_code ? ` (0x${Number(s.error_code >>> 0).toString(16)})` : ""}`);
+    renderLogs();
+    stopInstallPolling();
+    if (ok) loadInitialData();
+  }
+}
+
 async function refreshDownloads() {
   let jobs;
   try {
@@ -605,8 +706,62 @@ function downloadingIds() {
   return state.titles.filter((g) => g.downloading).map((g) => g.title_id).join(",");
 }
 
+// Top-of-page status banner. Visible while any job in this batch is queued,
+// active, or has just finished (done jobs linger one or two polls before the
+// pool reaps them, which is what gives us the "5 of 9" position).
+function renderGlobalStatus() {
+  const el = els.globalDl;
+  if (!el) return;
+  const jobs   = state.downloads || [];
+  const batch  = jobs.filter((j) => ["queued", "active", "done"].includes(j.state));
+  const flying = batch.filter((j) => j.state === "queued" || j.state === "active");
+
+  if (flying.length === 0) { el.hidden = true; return; }
+  el.hidden = false;
+
+  const active = batch.find((j) => j.state === "active") || flying[0];
+  const total  = batch.length;
+  const done   = batch.filter((j) => j.state === "done").length;
+  const pos    = Math.min(total, done + 1);
+  const isActive = active && active.state === "active";
+
+  // Eyebrow + name
+  els.globalDlState.textContent = isActive ? "Downloading" : "Queued";
+  els.globalDlName.textContent  = active.name || active.title_id || "—";
+
+  // Position chip ("3 of 9") only when there's more than one game in this run
+  if (total > 1) {
+    els.globalDlPosition.hidden = false;
+    els.globalDlPosition.textContent = `${pos} of ${total}`;
+  } else {
+    els.globalDlPosition.hidden = true;
+  }
+
+  // Progress line
+  const pct   = pctOf(active);
+  const speed = Number(active._speed) || 0;
+  const done_ = Number(active.bytes) || 0;
+  const total_ = Number(active.total_bytes) || 0;
+  els.globalDlPct.innerHTML   = isActive ? `<b>${pct}%</b>` : `<b>—</b> waiting`;
+  els.globalDlSpeed.innerHTML = isActive && speed > 0
+    ? `<b>${formatBytes(speed)}/s</b>`
+    : (isActive && !total_ ? "fetching manifest…" : "—");
+  els.globalDlEta.innerHTML = isActive && speed > 0 && total_ > done_
+    ? `ETA <b>${formatEta((total_ - done_) / speed)}</b>`
+    : "";
+
+  // Bar: animated indeterminate while fetching manifest, otherwise width=pct
+  if (isActive && total_ > 0) {
+    els.globalDlBar.classList.remove("is-indeterminate");
+    els.globalDlBar.style.width = pct + "%";
+  } else {
+    els.globalDlBar.classList.add("is-indeterminate");
+  }
+}
+
 // Update the progress bar/meta in place to avoid rebuilding every card each tick.
 function applyDownloadProgress() {
+  renderGlobalStatus();
   let needRender = false;
   state.downloads.forEach((d) => {
     // Only titles currently downloading render a progress tile; paused/done/error
@@ -671,6 +826,30 @@ async function saveConfig() {
 
 /* ---------------- actions (data layer) ---------------- */
 
+// Queue a download for every game that has an available update AND could
+// actually be installed afterwards. Shadowmounts pass isDownloadAllowed but
+// fail isInstallAllowed (their app slot has no real source medium), so a
+// sweep would otherwise pull tens of GB that AppInstUtil will refuse — the
+// user picks those up by hand when the disc is ready. The server tolerates
+// duplicate requests, so a second click is harmless. If install_after_download
+// is on, the per-job auto-install pipeline kicks in once each download
+// finishes — no further client action needed.
+async function updateAll() {
+  const targets = state.games.filter((g) =>
+    g.status === "available" && isInstallAllowed(g) &&
+    !g.downloading && !g.downloaded);
+  if (!targets.length) {
+    showToast("No installable updates to queue.");
+    return;
+  }
+  showToast(`Queueing ${targets.length} update${targets.length === 1 ? "" : "s"}…`);
+  for (const g of targets) {
+    // Sequential await: the pool returns quickly (202 Accepted) and we want
+    // a stable order in the queue, not a thundering-herd of concurrent POSTs.
+    try { await doDownload(g); } catch (_) { /* per-job errors already toast */ }
+  }
+}
+
 // Enqueue a download. The pool returns immediately (202); progress, completion
 // and (if configured) auto-install are driven by reconcileFromJobs() on poll.
 async function doDownload(game) {
@@ -709,6 +888,8 @@ async function doDownload(game) {
 
 async function doInstall(game) {
   game.installing = true;
+  game.installStatus = "starting";
+  game.installProgress = 0;
   game.downloaded = false; // the package is being consumed by the install
   renderGames();
   try {
@@ -722,7 +903,8 @@ async function doInstall(game) {
     return false;
   }
   state.logs.push(`[${timeNow()}] Install started for ${game.title_id} ${game.compatible_version} — running in PS5 background`);
-  showToast(`${game.name}: installing update — progress shows in your PS5 notifications.`);
+  showToast(`${game.name}: installing update.`);
+  startInstallPolling();
   renderGames(); renderLogs();
   return true;
 }
@@ -787,11 +969,26 @@ function updateGame(titleId, patch) {
 /* ---------------- policy helpers ---------------- */
 
 function isInstallBlocked(game) { return !sourcePolicy(game).allow_install; }
+function hasSharedStorage(game) {
+  if (game.patch_storage_match === false) return true;
+  const storage = (game.patch_storage_title_id || "").slice(0, 9);
+  const target = (game.title_id || "").slice(0, 9);
+  return Boolean(storage && target && storage !== target);
+}
+function isDownloadAllowed(game) {
+  return Boolean(
+    game.enabled !== false &&
+    game.compatible_version &&
+    game.patch_title_match !== false &&
+    sourcePolicy(game).allow_download
+  );
+}
 function isInstallAllowed(game) {
   return Boolean(
     game.enabled !== false &&
     game.compatible_version &&
     game.patch_title_match !== false &&
+    !hasSharedStorage(game) &&
     sourcePolicy(game).allow_install
   );
 }
@@ -820,6 +1017,7 @@ async function postJson(url, body) {
 
 const REASON_TEXT = {
   patch_title_mismatch: "Patch metadata targets a different title - install blocked.",
+  cross_region_storage_unsupported: "Patch bytes are signed for a shared master title; this standalone installer cannot retarget them.",
   install_not_allowed_for_source: "Install blocked for this source.",
   source_unknown: "Source unknown — blocked.",
   no_compatible_patch: "No compatible patch available.",

web/index.html

@@ -39,7 +39,7 @@
           <div class="brand-mark">PD</div>
           <div>
             <strong>PatchDL</strong>
-            <span>by Knutwurst · v0.0.3</span>
+            <span>by Knutwurst · <span id="brandVersion">--</span></span>
           </div>
         </div>
 
@@ -66,16 +66,43 @@
         <section class="view is-active" data-view="games">
           <header class="topbar">
             <div>
-              <p class="eyebrow">Standalone ELF Web UI</p>
+              <p class="eyebrow">PS5 update manager</p>
               <h1>Games</h1>
             </div>
             <div class="topbar-actions">
+              <button class="primary-button" id="updateAllBtn" title="Download (and optionally install) every game that has an available, allowed update">
+                <svg><use href="#icon-download"></use></svg>
+                Update all
+              </button>
               <button class="icon-button" id="refreshBtn" title="Refresh status and games" aria-label="Refresh">
                 <svg><use href="#icon-refresh"></use></svg>
               </button>
             </div>
           </header>
 
+          <aside id="globalDl" class="global-dl" hidden aria-live="polite">
+            <div class="global-dl-row">
+              <span class="global-dl-pulse" aria-hidden="true"></span>
+              <div class="global-dl-text">
+                <div class="global-dl-line1">
+                  <span class="global-dl-eyebrow" id="globalDlState">Downloading</span>
+                  <strong class="global-dl-name" id="globalDlName">—</strong>
+                  <span class="global-dl-position" id="globalDlPosition" hidden></span>
+                </div>
+                <div class="global-dl-line2">
+                  <span id="globalDlPct">0%</span>
+                  <span class="global-dl-sep" aria-hidden="true">·</span>
+                  <span id="globalDlSpeed">—</span>
+                  <span class="global-dl-sep" aria-hidden="true">·</span>
+                  <span id="globalDlEta">—</span>
+                </div>
+              </div>
+            </div>
+            <div class="global-dl-track">
+              <i class="global-dl-bar" id="globalDlBar" style="width:0%"></i>
+            </div>
+          </aside>
+
           <section class="status-strip" aria-label="System status">
             <article class="metric">
               <span>Firmware</span>
@@ -85,7 +112,7 @@
             <article class="metric">
               <span>DNS Guard</span>
               <strong id="dnsValue">--</strong>
-              <em>Sony blocked by nanoDNS</em>
+              <em>System DNS left untouched</em>
             </article>
             <article class="metric">
               <span>CDN Access</span>
@@ -105,11 +132,12 @@
               <input id="searchInput" type="search" placeholder="Search title, Title ID, or Content ID" />
             </div>
             <div class="segmented" role="group" aria-label="Filter">
-              <button class="is-selected" data-filter="all" aria-pressed="true">All</button>
-              <button data-filter="updatable" aria-pressed="false">Updatable</button>
+              <button class="is-selected" data-filter="updatable" aria-pressed="true">Updatable</button>
+              <button data-filter="updating" aria-pressed="false">Updating</button>
               <button data-filter="uptodate" aria-pressed="false">Up to date</button>
               <button data-filter="needsfw" aria-pressed="false">Needs FW</button>
               <button data-filter="blocked" aria-pressed="false">Can't update</button>
+              <button data-filter="all" aria-pressed="false">All</button>
             </div>
           </div>
 

web/styles.css

@@ -173,6 +173,105 @@ h2 { font-size: 18px; line-height: 1.2; }
   margin-bottom: 18px;
 }
 
+/* ---------------- global download banner ---------------- */
+/* Sticky banner above the status strip, visible only while at least one
+   download is queued/active. The pulse dot and gradient bar at the bottom
+   echo the per-game card progress styling so the two read as one system. */
+.global-dl {
+  position: relative;
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  margin-bottom: 18px;
+  padding: 16px 18px 0;
+  border: 1px solid var(--border);
+  background:
+    radial-gradient(120% 80% at 0% 0%, var(--green-soft), transparent 60%),
+    linear-gradient(180deg, rgba(56, 193, 114, 0.06), transparent 60%),
+    var(--surface);
+  border-radius: var(--radius);
+  overflow: hidden;
+}
+
+.global-dl[hidden] { display: none; }
+
+.global-dl-row {
+  display: flex;
+  align-items: center;
+  gap: 14px;
+  min-width: 0;
+}
+
+.global-dl-pulse {
+  flex: none;
+  width: 12px;
+  height: 12px;
+  border-radius: 50%;
+  background: var(--green);
+  box-shadow: 0 0 0 0 var(--green);
+  animation: globalDlPulse 1.6s ease-out infinite;
+}
+
+@keyframes globalDlPulse {
+  0%   { box-shadow: 0 0 0 0 rgba(56, 193, 114, 0.55); }
+  70%  { box-shadow: 0 0 0 14px rgba(56, 193, 114, 0);   }
+  100% { box-shadow: 0 0 0 0 rgba(56, 193, 114, 0);      }
+}
+
+.global-dl-text { display: flex; flex-direction: column; gap: 4px; min-width: 0; flex: 1; }
+
+.global-dl-line1 {
+  display: flex; align-items: baseline; gap: 10px;
+  min-width: 0; flex-wrap: wrap;
+}
+.global-dl-eyebrow {
+  text-transform: uppercase; letter-spacing: 0.08em;
+  font-size: 11px; font-weight: 600; color: var(--green-dark);
+}
+.global-dl-name {
+  font-size: 16px; font-weight: 600; color: #fff;
+  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
+  min-width: 0; flex: 1;
+}
+.global-dl-position {
+  font-size: 12px; color: var(--muted);
+  padding: 2px 8px; border-radius: 999px;
+  background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border);
+}
+.global-dl-position[hidden] { display: none; }
+
+.global-dl-line2 {
+  display: flex; align-items: center; gap: 8px;
+  font-size: 12px; color: var(--muted);
+  font-variant-numeric: tabular-nums;
+}
+.global-dl-line2 b { color: #d6dde4; font-weight: 600; }
+.global-dl-sep { opacity: 0.5; }
+
+.global-dl-track {
+  position: relative;
+  height: 3px;
+  margin: 0 -18px;     /* extend bar edge-to-edge */
+  background: rgba(56, 193, 114, 0.08);
+  overflow: hidden;
+}
+.global-dl-bar {
+  display: block;
+  height: 100%;
+  width: 0%;
+  background: linear-gradient(90deg, var(--green) 0%, var(--green-dark) 100%);
+  box-shadow: 0 0 12px rgba(56, 193, 114, 0.4);
+  transition: width 400ms ease-out;
+}
+.global-dl-bar.is-indeterminate {
+  width: 32% !important;
+  animation: globalDlIndet 1.6s ease-in-out infinite;
+}
+@keyframes globalDlIndet {
+  0%   { transform: translateX(-100%); }
+  100% { transform: translateX(320%);  }
+}
+
 .metric {
   min-width: 0;
   padding: 14px 16px;