README: point links and badges at the renamed ps5-patchdl repo

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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+contain the covered work, unless you entered into that arrangement,
+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.
+
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+otherwise) that contradict the conditions of this License, they do not
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+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
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+
+  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) $(SQLITE_OBJ)
+$(BIN): $(SRCS) $(GEN_SRCS) $(SQLITE_OBJ) $(TILE_ASSETS)
-	$(CC) $(CFLAGS) -o $@ $^ $(LDADD)
+	$(CC) $(CFLAGS) -o $@ $(SRCS) $(GEN_SRCS) $(SQLITE_OBJ) $(LDADD)
 
 test: $(BIN)
 	$(PS5_DEPLOY) -h $(PS5_HOST) -p $(PS5_PORT) $^

README.md

@@ -1,95 +1,123 @@
-# PatchDL
+<h1 align="center">PatchDL</h1>
 
-A standalone PlayStation 5 ELF payload that downloads and installs official game
+<p align="center">
-patches on your terms. It serves its own web UI and runs without etaHEN.
+  <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
+<p align="center">
-console. It resolves the Sony patch CDN on its own path, so the rest of the
+  <b>Official game updates for your PS5, from any browser.</b><br>
-system stays offline and only the patches you pick get fetched.
+  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/ps5-patchdl?style=for-the-badge&label=release&color=22c55e" alt="Latest release">
+  <img src="https://img.shields.io/github/downloads/knutwurst/ps5-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/ps5-patchdl?style=for-the-badge&color=3a3a3a" alt="License">
+</p>
 
-## What it does
+<p align="center">
+  <a href="https://github.com/knutwurst/ps5-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 one: genuine install,
+---
-  ShadowMountPlus mount, preinstall, or unknown.
-- Reads the title name, installed version, and the Sony `version.xml` URL from
-  the PS5 app database.
-- Fetches each title's `version.xml` from Sony's CDN 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 installable package from Sony's manifest pieces and installs it
-  through Sony's AppInstUtil service.
 
-## Safety model
+## Highlights
 
-Deny-by-default. A patch is installed only for a genuine install, and only when
+- **Your whole library at a glance.** Every installed game shows up with its version and the newest update Sony offers for it.
-the patch metadata targets the installed game:
+- **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.
 
-| Source                | Check | Download | Install |
+## Screenshots
-|-----------------------|-------|----------|---------|
-| official              | yes   | yes      | yes     |
-| shadowmount           | yes   | yes      | no      |
-| preinstall / unknown  | yes   | no       | no      |
 
-Two independent guards stop the wrong target being installed: the patch target
+<table>
-id (read from `version.xml` / `manifest_url`) must match the installed game, and
+  <tr>
-the install call receives the installed game's content id from app.db. Sony may
+    <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>
-store the actual patch bytes under a regional/master title id that differs from
+    <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>
-the target; that storage id is accepted only when `version.xml` targets the
+  </tr>
-installed title. A true target-title mismatch is refused instead of installed as
+  <tr>
-a phantom title.
+    <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>
 
-For PS5 titles, `delta_url` often points to a small `*-DP.pkg` helper package.
+## Fits any screen
-That bootstrap can make the system fetch the full patch, but it follows the
-package's storage/master title id and can create a duplicate/ghost title for
-cross-region updates. PatchDL therefore prefers the Sony `manifest_url`,
-downloads every listed `pieces[]` entry in order, and concatenates them into one
-local `.pkg` before handing it to AppInstUtil. The `delta_url` title id is kept
-only as the storage/master-id diagnostic.
 
-## Build
+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.
 
-Requires `ps5-payload-dev/sdk`. The network and install features also need the
+<p align="center">
-prebuilt libcurl + OpenSSL from `ps5-payload-dev/pacbrew-repo` placed in the SDK
+  <img src="docs/images/phones.jpg" alt="PatchDL on a phone: game list with a download, and Settings" width="560">
-sysroot (`target/user/homebrew`); `scripts/build_ps5.sh` enables them
+</p>
-automatically when present. libmicrohttpd is vendored under `vendor/etahen`, and
+
-SQLite is vendored under `vendor/sqlite`.
+## Get started
+
+1. Download `patchdl_<version>.elf` from the [latest release](https://github.com/knutwurst/ps5-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.
+
+**You need** a PS5 that can load ELF payloads. PatchDL is tested on firmware 11.60.
+
+## Good to know
+
+**Does PatchDL download games?**
+No. It fetches updates for games that are already installed on your console. Nothing else.
+
+**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.
+
+**Does it change the updates?**
+No. Each package stays exactly as Sony published it, and the console's own installer applies it.
+
+**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
+To try a build on your own console:
-8084 (not a 9021 elfldr). `scripts/deploy_ps5.sh` uploads the ELF named with its
-version and launches it; the payload replaces any running instance itself.
 
 ```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
+## Credits
-http://<console-ip>:12880/
-```
 
-## 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.
 
-0.0.2, early. Title scan, source classification, version resolution,
+## License
-firmware-compatibility filtering, target/storage-id handling, and the local
+
-AppInstUtil HTTP stream have been verified on firmware 11.60. PatchDL now
+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.
-downloads PS5 update manifests as merged piece packages under `/data/patchdl`;
+
-large retail updates can be tens of GB. The download queue shows live progress,
+Copyright © 2026 Knutwurst.
-and each download can be cancelled (the partial file is deleted) or a finished
-package deleted again, from the queue or the title card. Manifest pieces are
-verified in offset order and against their declared size while merging. Open
-items: a full large-title manifest download/install still needs an end-to-end
-run, the web UI marks a title "Installing…" but reads progress from the PS5's
-own notifications rather than a percentage, and disc-based games need the disc
-inserted for their patch to apply (a normal Sony requirement).
-Settings (global policy and the per-game toggle) persist to
-`/data/patchdl/config.json` and survive a restart.

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
@@ -57,11 +105,15 @@ typedef int (*ai_install_pkg_fn)(const char *path, ai_pkg_info_t *info);
 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
@@ -70,11 +122,18 @@ static ai_title_from_pkg_fn ai_title_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. */
+   4 initialize, 5 ready, negative = failure at that step.
-static volatile int    g_stage;
+   Stored as _Atomic so the worker's release-store and the request handlers'
-static int             g_err;
+   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) {
@@ -110,6 +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
@@ -124,6 +240,7 @@ fill_probe(void) {
         "sceAppInstUtilInstallByPackageEx",
         "sceAppInstUtilGetTitleIdFromPkg",
         "sceAppInstUtilGetContentIdFromPkg",
+        "sceAppInstUtilGetInstallStatus",
         "sceAppInstUtilAppExist",
         "sceAppInstUtilAppGetInstallStatus",
         "sceAppInstUtilAppInstallStatus",
@@ -205,6 +322,10 @@ backend_init_thread(void *arg) {
                                                          "sceAppInstUtilInstallByPackage");
     ai_title_from_pkg     = (ai_title_from_pkg_fn)dynsym("libSceAppInstUtil.sprx",
                                                          "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();
@@ -284,6 +405,168 @@ patchdl_install_api_probe(char *out, size_t out_sz) {
     return -1;
 }
 
+/* Read-only: report the .pkg's embedded content id + title id (and whether it
+   is a full app vs a patch). No install, no side effects. 0 if anything read. */
+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) {
+    char        sdk_path[1024];
+    /* 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;
+
+    if (content_id && cid_sz) content_id[0] = '\0';
+    if (title_id && tid_sz)   title_id[0]   = '\0';
+    if (is_app) *is_app = 0;
+
+    if (!local_path || !local_path[0] || stat(local_path, &st) != 0) {
+        snprintf(msg, msg_sz, "package not on disk");
+        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);
+
+    if (ai_content_from_pkg &&
+        ai_content_from_pkg(sdk_path, cid, &app_c) == 0 && cid[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]) {
+        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,
@@ -294,7 +577,6 @@ patchdl_install_local_pkg(const char *local_path, const char *expected_title_id,
     struct stat st;
     int         rc;
     int         pkg_tid_mismatch = 0;
-    const char *last_uri = "";
 
     if (!local_path || !local_path[0]) {
         snprintf(msg, msg_sz, "no package path");
@@ -311,10 +593,11 @@ patchdl_install_local_pkg(const char *local_path, const char *expected_title_id,
         return -1;
     }
 
-    /* AppInstallPkg runs in a sandbox that sees the user partition as
+    /* Sony's installer sees the user partition as /user/data, not /data, and
-       /user/data, not /data. InstallByPackage is different: the shell/debug
+       PATH-ALLOWLISTS the URI passed to InstallByPackage: /user/data/ and
-       installer path takes the normal /data/... URI, so keep `local_path` for
+       /mnt/usb are accepted, but a bare /data/... path is REJECTED with
-       that API and use `sdk_path` only for AppInstallPkg / metadata probes. */
+       0x80B2116F (empirically confirmed by the ps5upload project). So feed the
+       /user/data view of the file to both InstallByPackage and AppInstallPkg. */
     if (!strncmp(local_path, "/data/", 6))
         snprintf(sdk_path, sizeof(sdk_path), "/user%s", local_path);
     else
@@ -326,15 +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] &&
+        if (ai_title_from_pkg(sdk_path, tid_out, &is_app) == 0 && tid_out[0]) {
-            strncmp(pkg_tid, expected_title_id, 9) != 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])) {
@@ -343,10 +631,11 @@ patchdl_install_local_pkg(const char *local_path, const char *expected_title_id,
                  pkg_tid, expected_title_id);
         return -1;
     }
-
+    /* Preferred path: etaHEN's DPI uses InstallByPackage with the installed
-    /* Preferred path: InstallByPackage accepts target metadata. Use it first,
+       game's content_id in MetaInfo so AppInstUtil binds the install to the
-       and use it exclusively when the downloaded bytes report a master/storage
+       right title slot. For shared-master cross-region packages the pkg bytes
-       title id that differs from the target regional title id. */
+       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};
@@ -354,12 +643,19 @@ patchdl_install_local_pkg(const char *local_path, const char *expected_title_id,
         const char       *uris[4];
         ai_meta_info_t    meta    = {0};
         ai_pkg_info_t     pkg     = {0};
-        ai_playgo_info_t playgo = {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;
 
-        snprintf(file_uri, sizeof(file_uri), "file://%s", local_path);
+        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/");
         file_base = strrchr(local_path, '/');
         if (title_dir && file_base && file_base > title_dir + strlen("/data/patchdl/")) {
@@ -369,6 +665,10 @@ 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);
+                /* 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);
@@ -379,53 +679,166 @@ patchdl_install_local_pkg(const char *local_path, const char *expected_title_id,
                                  ip, PATCHDL_HTTP_PORT, title_id, file_base + 1);
                 }
             }
-        uris[0]                 = local_path;
+        }
-        uris[1]                 = file_uri;
+        uris[0]                 = sdk_path;      /* /user/data/... — the allowlisted path */
+        uris[1]                 = file_uri;       /* file:///user/data/... */
         uris[2]                 = http_loop_uri[0] ? http_loop_uri : NULL;
         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           = "";
 
+        {
+            char        tries[260] = {0};
+            const char *labels[4]  = { "userdata", "file", "loop", "lan" };
             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];
-            last_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)",
+                    remember_install(expected_title_id, "InstallByPackage",
-                         pkg_tid_mismatch ? ", shared master bytes" : "");
+                                     &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;
         }
-
+        free(playgo);
-    if (pkg_tid_mismatch) {
-        snprintf(msg, msg_sz,
-                 "install rejected (InstallByPackage=0x%08x, pkg %.12s, target %.12s, uri %.96s)",
-                 (unsigned)rc, pkg_tid, expected_title_id ? expected_title_id : "",
-                 last_uri);
-        return rc ? rc : -1;
     }
 
-    /* Last resort for normal same-title packages only. This path has no target
+    /* AppInstallPkg: simpler API, no MetaInfo content_id override. Tried for
-       metadata parameter, so it is intentionally skipped for shared-master
+       all packages including cross-region, since it may have different
-       region bytes. */
+       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;
         }
+        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
+   `target_content_id` is the installed game's content id from app.db; it is
-   present it is passed to InstallByPackage so Sony's installer has the target
+   retained for diagnostics and status fallback. Normal same-title installs
-   metadata even for region-shared/master-storage patch bytes. */
+   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,
@@ -31,3 +41,35 @@ int patchdl_install_backend_check(char *msg, size_t msg_sz);
    AppInstUtil/Bgft patch-install symbols and report which exist on this
    firmware. Writes a JSON object into `out`. No install, no side effects. */
 int patchdl_install_api_probe(char *out, size_t out_sz);
+
+/* Read-only: report the .pkg's embedded content id + title id (and whether it
+   is a full app vs a patch, via *is_app). No install. 0 if anything was read. */
+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;
@@ -198,14 +244,14 @@ dns_lookup(const char *host, char *ip_out, size_t ip_sz) {
             return 0;
         }
     }
-    pthread_mutex_unlock(&dns_cache_mtx);
+    /* Cold miss: resolve while HOLDING the cache lock (single-flight). N pool
-
+       workers needing the same CDN host would otherwise each blast Sony's
+       rate-limited resolver; this way one resolves and the rest get the cache.
+       It also serializes dns_resolve so its diagnostic globals can't be raced.
+       (This is the DNS lock, independent of the pool lock.) */
     for (int attempt = 0; attempt < 4 && rc; attempt++)
         rc = dns_resolve(host, ip_out, ip_sz);
-    if (rc) return -1;
+    if (!rc && dns_cache_n < (int)(sizeof(dns_cache) / sizeof(dns_cache[0]))) {
-
-    pthread_mutex_lock(&dns_cache_mtx);
-    if (dns_cache_n < (int)(sizeof(dns_cache) / sizeof(dns_cache[0]))) {
         strncpy(dns_cache[dns_cache_n].host, host,
                 sizeof(dns_cache[0].host) - 1);
         strncpy(dns_cache[dns_cache_n].ip, ip_out,
@@ -213,7 +259,7 @@ dns_lookup(const char *host, char *ip_out, size_t ip_sz) {
         dns_cache_n++;
     }
     pthread_mutex_unlock(&dns_cache_mtx);
-    return 0;
+    return rc;
 }
 
 /* ---------- HTTP GET via curl ------------------------------------------- */
@@ -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);
 
+    {
+        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);
@@ -344,14 +405,20 @@ curl_progress_cb(void *clientp, curl_off_t dltotal, curl_off_t dlnow,
 }
 
 /* Returns 0 on success, -1 on download/network failure, -2 when an expected
-   SHA-256 was given and the downloaded bytes did not match it. */
+   SHA-256 was given and the downloaded bytes did not match it, -3 when a byte
+   range was requested (range_start>0) but the server ignored it (no HTTP 206).
+   When range_start>0 the body is appended at the file's current position, so
+   the caller must have it positioned at range_start and must not verify. */
 static int
 http_download_to_file_progress(const char *url, FILE *fp, long long *bytes_out,
                                progress_state_t *progress,
-                               const char *expected_sha256_hex) {
+                               const char *expected_sha256_hex,
+                               long long range_start) {
     CURL             *curl;
     CURLcode          res;
     char              host[256], ip[INET_ADDRSTRLEN], rs443[512], rs80[512];
+    char              range_hdr[48];
+    long              http_code = 0;
     struct curl_slist *rl = NULL;
     struct curl_blob  ca_blob;
     curl_off_t        dl = 0;
@@ -395,11 +462,22 @@ 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);
     curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME,  30L);
     curl_easy_setopt(curl, CURLOPT_USERAGENT,       "patchdl/1.0");
+    if (range_start > 0) {
+        snprintf(range_hdr, sizeof(range_hdr), "%lld-", range_start);
+        curl_easy_setopt(curl, CURLOPT_RANGE, range_hdr);
+    }
     if (progress && progress->cb) {
         curl_easy_setopt(curl, CURLOPT_NOPROGRESS,       0L);
         curl_easy_setopt(curl, CURLOPT_XFERINFOFUNCTION, curl_progress_cb);
@@ -407,6 +485,7 @@ http_download_to_file_progress(const char *url, FILE *fp, long long *bytes_out,
     }
 
     res = curl_easy_perform(curl);
+    curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http_code);
     curl_easy_getinfo(curl, CURLINFO_SIZE_DOWNLOAD_T, &dl);
     curl_easy_cleanup(curl);
     curl_slist_free_all(rl);
@@ -415,13 +494,22 @@ http_download_to_file_progress(const char *url, FILE *fp, long long *bytes_out,
         if (sink.md) EVP_MD_CTX_free(sink.md);
         return -1;
     }
+    /* Asked for a byte range but the server sent the whole file (no 206): the
+       caller must drop the piece and re-fetch it whole. */
+    if (range_start > 0 && http_code != 206) {
+        if (sink.md) EVP_MD_CTX_free(sink.md);
+        return -3;
+    }
 
     if (sink.md) {
         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 */
@@ -435,12 +523,12 @@ 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;
 
     if (!fp) return -1;
-    rc = http_download_to_file_progress(url, fp, bytes_out, &progress, NULL);
+    rc = http_download_to_file_progress(url, fp, bytes_out, &progress, NULL, 0);
     fclose(fp);
 
     if (rc) {
@@ -456,8 +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;
@@ -465,35 +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) {
+    while ((!limit || q < limit) && *q && *q != '"' && n + 1 < out_sz) {
-        if (*q == '\\' && q[1]) q++;
+        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;
@@ -504,17 +632,17 @@ patchdl_http_download_manifest_progress(const char *manifest_url,
                                         const char *dest_path,
                                         long long *bytes_out,
                                         patchdl_download_progress_cb cb,
-                                        void *ctx, int verify) {
+                                        void *ctx, int verify, int resume) {
     patchdl_buf_t manifest;
-    const char *pieces;
+    const char *pieces, *pieces_end, *p;
-    const char *p;
+    FILE *fp = NULL;
-    FILE *fp;
+    long long total = 0, have = 0;
-    long long total = 0;
     unsigned long long manifest_total = 0;
-    int count = 0;
+    int count = 0, started, rc = -1;
-    int 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) {
@@ -529,52 +657,113 @@ 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. */
-    const char *pieces_end = strchr(pieces, ']');
+    pieces_end = strchr(pieces, ']');
-    json_u64_after(manifest.data, "originalFileSize", &manifest_total);
+    json_u64_after(manifest.data, "originalFileSize", &manifest_total, NULL);
 
-    fp = fopen(dest_path, "wb");
+    /* Resume: reopen the existing partial and keep its bytes; else start clean.
-    if (!fp) {
+       Fully-downloaded pieces are skipped; the one piece that was only partially
-        free(manifest.data);
+       written continues mid-piece via an HTTP byte range (with a fall back to
-        return -1;
+       re-fetching it whole if the CDN ignores the range). */
+    if (resume) {
+        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_safe(dest_path, 0); have = 0; }
+    if (!fp) { free(manifest.data); return -1; }
+    started = (have <= 0);
 
     p = pieces;
     while ((p = strstr(p, "\"url\"")) && (!pieces_end || p < pieces_end)) {
         char url[768];
         char hash[80] = {0};
-        long long got = 0;
+        long long got = 0, range_start = 0;
         unsigned long long expected = 0;
         unsigned long long offset = 0;
         int have_offset, drc;
+        const char *want_hash;
         const char *obj_end = strchr(p, '}');
-        progress_state_t progress = {
+        const char *piece_limit = (obj_end && (!pieces_end || obj_end < pieces_end))
-            cb,
+                                  ? obj_end : pieces_end;
-            ctx,
-            total,
-            manifest_total ? (long long)manifest_total : 0
-        };
 
-        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);
+        json_u64_after(p, "fileSize", &expected, piece_limit);
-        have_offset = (json_u64_after(p, "fileOffset", &offset) == 0);
+        have_offset = (json_u64_after(p, "fileOffset", &offset, piece_limit) == 0);
-        if (verify)
-            json_string_after(p, "hashValue", hash, sizeof(hash));
 
-        /* Pieces are concatenated in array order; each one's fileOffset must
+        /* Piece already fully present from a previous run: skip the download. */
-           equal the bytes written so far. A manifest that lists them out of
+        if (!started && have_offset && expected &&
-           order would otherwise silently produce a corrupt package. */
+            have >= (long long)(offset + expected)) {
-        if (have_offset && offset != (unsigned long long)total)
+            total = (long long)(offset + expected);
+            count++;
+            if (cb && cb(ctx, total, manifest_total ? (long long)manifest_total : total))
+                goto done;
+            p = obj_end ? obj_end + 1 : p + 5;
+            continue;
+        }
+
+        /* First piece to (re)download while resuming. If part of it is already
+           on disk, resume WITHIN it with a byte range; otherwise drop any stray
+           bytes and fetch it whole. After this, every piece is fetched whole. */
+        if (!started) {
+            if (have_offset && expected && have > (long long)offset &&
+                have < (long long)(offset + expected)) {
+                range_start = have - (long long)offset;  /* this piece's bytes on disk */
+                fseek(fp, 0, SEEK_END);                   /* append at `have` */
+                total = have;
+            } else {
+                long long start_at = have_offset ? (long long)offset : 0;
+                fflush(fp);
+                if (ftruncate(fileno(fp), (off_t)start_at) != 0)
+                    goto done;             /* can't resume cleanly; keep partial */
+                fseek(fp, 0, SEEK_END);
+                total = start_at;
+            }
+            started = 1;
+        }
+
+        /* Whole pieces are concatenated in array order; a ranged (partial) piece
+           starts mid-piece, so the contiguity guard applies only to whole ones. */
+        if (have_offset && range_start == 0 && offset != (unsigned long long)total)
             goto done;
 
-        /* drc: 0 ok, -1 network/cancel, -2 SHA-256 mismatch (propagated out). */
+        /* 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), piece_limit);
+            want_hash = hash[0] ? hash : NULL;
+        }
+
+        {
+            progress_state_t progress = {
+                cb, ctx, total, manifest_total ? (long long)manifest_total : 0
+            };
+            /* drc: 0 ok, -1 network/cancel, -2 SHA-256, -3 range ignored. */
             drc = http_download_to_file_progress(url, fp, &got, &progress,
-                                             hash[0] ? hash : NULL);
+                                                 want_hash, range_start);
+            if (drc == -3) {
+                /* Server ignored the range: drop the piece and fetch it whole. */
+                fflush(fp);
+                if (ftruncate(fileno(fp), (off_t)offset) != 0)
+                    goto done;
+                fseek(fp, 0, SEEK_END);
+                total = (long long)offset;
+                range_start = 0;
+                if (verify) {
+                    json_string_after(p, "hashValue", hash, sizeof(hash),
+                                      piece_limit);
+                    want_hash = hash[0] ? hash : NULL;
+                }
+                progress.base = total;
+                drc = http_download_to_file_progress(url, fp, &got, &progress,
+                                                     want_hash, 0);
+            }
+        }
         if (drc) {
             if (drc == -2) rc = -2;
             goto done;
         }
-        if (expected && (unsigned long long)got != expected)
+        /* range_start + got = this piece's bytes now on disk. */
+        if (expected && (unsigned long long)(range_start + got) != expected)
             goto done;
 
         total += got;
@@ -593,7 +782,8 @@ patchdl_http_download_manifest_progress(const char *manifest_url,
 done:
     fclose(fp);
     free(manifest.data);
-    if (rc) unlink(dest_path);
+    /* Keep the partial on failure so it can be resumed; the caller deletes it
+       on cancel or on a corrupt-verify (-2). */
     return rc;
 }
 
@@ -601,7 +791,267 @@ int
 patchdl_http_download_manifest(const char *manifest_url, const char *dest_path,
                                long long *bytes_out) {
     return patchdl_http_download_manifest_progress(manifest_url, dest_path,
-                                                  bytes_out, NULL, NULL, 0);
+                                                  bytes_out, NULL, NULL, 0, 0);
+}
+
+/* ---- global init + parallel piece download (connection pool) ----------- */
+
+void patchdl_net_global_init(void)    { curl_global_init(CURL_GLOBAL_ALL); }
+void patchdl_net_global_cleanup(void) { curl_global_cleanup(); }
+
+/* Write sink for one piece: pwrite at a fixed base offset (concurrent
+   non-overlapping pieces of the same fd are safe), tee into SHA-256 if asked,
+   and publish bytes-so-far for live progress. */
+typedef struct {
+    int                 fd;
+    long long           base;
+    long long           written;
+    EVP_MD_CTX         *md;
+    volatile long long *bytes_slot;
+} piece_sink_t;
+
+static size_t
+piece_write_cb(void *ptr, size_t size, size_t nmemb, void *ud) {
+    piece_sink_t *s = (piece_sink_t *)ud;
+    size_t        n = size * nmemb;
+    ssize_t       w;
+    if (n == 0) return 0;
+    w = pwrite(s->fd, ptr, n, (off_t)(s->base + s->written));
+    if (w < 0 || (size_t)w != n) return 0;   /* short write -> curl errors out */
+    if (s->md) EVP_DigestUpdate(s->md, ptr, n);
+    s->written += (long long)n;
+    if (s->bytes_slot) *s->bytes_slot = s->written;
+    return n;
+}
+
+static int
+piece_xfer_cb(void *clientp, curl_off_t dltotal, curl_off_t dlnow,
+              curl_off_t ultotal, curl_off_t ulnow) {
+    volatile int *abort_flag = (volatile int *)clientp;
+    (void)dltotal; (void)dlnow; (void)ultotal; (void)ulnow;
+    return (abort_flag && *abort_flag) ? 1 : 0;   /* non-zero aborts the transfer */
+}
+
+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,
+                            int *curl_rc_out, long *http_code_out) {
+    CURL             *curl;
+    CURLcode          res;
+    long              http_code = 0;
+    char              host[256], ip[INET_ADDRSTRLEN], rs443[512], rs80[512];
+    struct curl_slist *rl = NULL;
+    struct curl_blob  ca_blob;
+    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;
+
+    memset(&sink, 0, sizeof(sink));
+    sink.fd         = fd;
+    sink.base       = file_offset;
+    sink.bytes_slot = ctx ? ctx->bytes_slot : NULL;
+    if (verify) {
+        sink.md = EVP_MD_CTX_new();
+        if (sink.md) EVP_DigestInit_ex(sink.md, EVP_sha256(), NULL);
+    }
+
+    snprintf(rs443, sizeof(rs443), "%s:443:%s", host, ip);
+    rl = curl_slist_append(NULL, rs443);
+    snprintf(rs80, sizeof(rs80), "%s:80:%s", host, ip);
+    rl = curl_slist_append(rl, rs80);
+
+    ca_blob.data  = (void *)PATCHDL_SCEI_DNAS_ROOT_PEM;
+    ca_blob.len   = strlen(PATCHDL_SCEI_DNAS_ROOT_PEM);
+    ca_blob.flags = CURL_BLOB_COPY;
+
+    curl = curl_easy_init();
+    if (!curl) {
+        curl_slist_free_all(rl);
+        if (sink.md) EVP_MD_CTX_free(sink.md);
+        return -1;
+    }
+
+    curl_easy_setopt(curl, CURLOPT_URL,             url);
+    curl_easy_setopt(curl, CURLOPT_RESOLVE,         rl);
+    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION,   piece_write_cb);
+    curl_easy_setopt(curl, CURLOPT_WRITEDATA,       &sink);
+    curl_easy_setopt(curl, CURLOPT_CAINFO_BLOB,     &ca_blob);
+    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_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);
+    curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME,  30L);
+    curl_easy_setopt(curl, CURLOPT_USERAGENT,       "patchdl/1.0");
+    if (ctx && ctx->abort) {
+        curl_easy_setopt(curl, CURLOPT_NOPROGRESS,       0L);
+        curl_easy_setopt(curl, CURLOPT_XFERINFOFUNCTION, piece_xfer_cb);
+        curl_easy_setopt(curl, CURLOPT_XFERINFODATA,     (void *)ctx->abort);
+    }
+
+    res = curl_easy_perform(curl);
+    curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http_code);
+    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 */
+    }
+    if (file_size > 0 && sink.written != file_size) {
+        if (sink.md) EVP_MD_CTX_free(sink.md);
+        return -1;                          /* short or over-long -> failed */
+    }
+    if (sink.md) {
+        unsigned char dig[EVP_MAX_MD_SIZE];
+        unsigned int  dl = 0;
+        char          hex[2 * EVP_MAX_MD_SIZE + 1];
+        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 */
+    }
+    fdatasync(fd);                          /* durable before the caller sets the done bit */
+    return 0;
+}
+
+/* Read-only: SHA-256 a [offset, offset+size) region of fd into out_hex (>=65
+   bytes). Uses pread so it doesn't disturb the fd offset. 0 on success. */
+int
+patchdl_sha256_fd_region(int fd, long long offset, long long size, char *out_hex) {
+    EVP_MD_CTX   *md;
+    unsigned char *buf;
+    long long      pos = offset, remaining = size;
+    const size_t   CHUNK = 1u << 20;
+
+    out_hex[0] = '\0';
+    if (fd < 0 || size < 0) return -1;
+    md = EVP_MD_CTX_new();
+    if (!md) return -1;
+    buf = malloc(CHUNK);
+    if (!buf) { EVP_MD_CTX_free(md); return -1; }
+    EVP_DigestInit_ex(md, EVP_sha256(), NULL);
+    while (remaining > 0) {
+        size_t  want = remaining > (long long)CHUNK ? CHUNK : (size_t)remaining;
+        ssize_t got  = pread(fd, buf, want, (off_t)pos);
+        if (got <= 0) { free(buf); EVP_MD_CTX_free(md); return -1; }
+        EVP_DigestUpdate(md, buf, (size_t)got);
+        pos += got; remaining -= got;
+    }
+    {
+        unsigned char dig[EVP_MAX_MD_SIZE];
+        unsigned int  dl = 0, 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);
+    EVP_MD_CTX_free(md);
+    return 0;
+}
+
+void
+patchdl_manifest_free(patchdl_manifest_t *m) {
+    if (!m || !m->pieces) return;
+    for (int i = 0; i < m->count; i++) free(m->pieces[i].url);
+    free(m->pieces);
+    m->pieces = NULL;
+    m->count = 0;
+}
+
+int
+patchdl_fetch_manifest(const char *manifest_url, patchdl_manifest_t *out) {
+    patchdl_buf_t buf;
+    const char *pieces, *pieces_end, *p;
+    int       cap = 0, n = 0;
+    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; }
+
+    pieces = strstr(buf.data, "\"pieces\"");
+    if (!pieces || !(pieces = strchr(pieces, '['))) { free(buf.data); return -1; }
+    pieces_end = strchr(pieces, ']');
+
+    for (p = pieces; (p = strstr(p, "\"url\"")) && (!pieces_end || p < pieces_end); p += 5)
+        cap++;
+    if (cap <= 0) { free(buf.data); return -1; }
+    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), piece_limit))
+            break;
+        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,
+           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;
+        }
+        out->pieces[n].url    = strdup(url);
+        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), piece_limit);
+        if (!out->pieces[n].url) {
+            patchdl_manifest_free(out);
+            free(buf.data);
+            return -1;
+        }
+        running += (long long)sz;
+        n++;
+        out->count = n;          /* keep current so manifest_free frees exactly n */
+        p = obj_end ? obj_end + 1 : p + 5;
+    }
+    free(buf.data);
+    if (n == 0) { patchdl_manifest_free(out); return -1; }
+    out->total = running;        /* authoritative assembled size */
+    return 0;
 }
 
 void
@@ -637,6 +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);
@@ -696,8 +1149,8 @@ patchdl_http_download_manifest_progress(const char *manifest_url,
                                         const char *dest_path,
                                         long long *bytes_out,
                                         patchdl_download_progress_cb cb,
-                                        void *ctx, int verify) {
+                                        void *ctx, int verify, int resume) {
-    (void)cb; (void)ctx; (void)verify;
+    (void)cb; (void)ctx; (void)verify; (void)resume;
     return patchdl_http_download_manifest(manifest_url, dest_path, bytes_out);
 }
 

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>
@@ -6,13 +15,66 @@ 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);
 void           patchdl_buf_free(patchdl_buf_t *b);
 
+/* Call once, single-threaded, before any concurrent download worker starts /
+   after they have all joined. curl's global/OpenSSL init is otherwise lazy and
+   races across threads. */
+void patchdl_net_global_init(void);
+void patchdl_net_global_cleanup(void);
+
 int patchdl_http_get(const char *url, patchdl_buf_t *out);
 
+/* ---- parallel piece download (used by the connection pool) ------------- */
+
+/* One piece of a split manifest package. `url` is heap-allocated. */
+typedef struct {
+    char     *url;
+    long long offset;     /* byte offset of this piece in the assembled file */
+    long long size;       /* exact length of this piece */
+    char      hash[80];   /* manifest SHA-256 hex, or "" */
+} patchdl_piece_t;
+
+typedef struct {
+    patchdl_piece_t *pieces;
+    int              count;
+    long long        total;   /* assembled file size = sum of piece sizes */
+} patchdl_manifest_t;
+
+/* Fetch + parse a Sony JSON manifest into a validated, contiguously-tiled
+   piece list. Returns 0 on success (caller frees with patchdl_manifest_free),
+   -1 on fetch/parse/tiling failure. */
+int  patchdl_fetch_manifest(const char *manifest_url, patchdl_manifest_t *out);
+void patchdl_manifest_free(patchdl_manifest_t *m);
+
+/* Live state shared with one in-flight piece download. The worker owns these;
+   the curl callbacks read `abort` (set elsewhere) and publish progress into
+   `bytes_slot` (single-writer per worker slot). */
+typedef struct {
+    volatile long long *bytes_slot;  /* bytes written so far for this piece */
+    volatile int       *abort;       /* non-zero -> stop this transfer */
+} patchdl_piece_ctx_t;
+
+/* 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.
+   `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,
+                                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. */
+int patchdl_sha256_fd_region(int fd, long long offset, long long size,
+                             char *out_hex);
+
 /* Progress callback. Return non-zero to ABORT the in-flight download (used to
    cancel large patch downloads); return 0 to continue. */
 typedef int (*patchdl_download_progress_cb)(void *ctx,
@@ -29,14 +91,17 @@ int patchdl_http_download_progress(const char *url, const char *dest_path,
 
 /* Download a Sony JSON package manifest by concatenating every entry in
    "pieces" into one installable PKG. When `verify` is non-zero each piece is
-   checked against its manifest SHA-256 (a mismatch returns -2). */
+   checked against its manifest SHA-256 (a mismatch returns -2). When `resume`
+   is non-zero an existing partial at dest_path is kept: fully-downloaded pieces
+   are skipped and only the remainder is fetched (survives a reboot). On any
+   failure the partial is left in place for a later resume. */
 int patchdl_http_download_manifest(const char *manifest_url, const char *dest_path,
                                    long long *bytes_out);
 int patchdl_http_download_manifest_progress(const char *manifest_url,
                                             const char *dest_path,
                                             long long *bytes_out,
                                             patchdl_download_progress_cb cb,
-                                            void *ctx, int verify);
+                                            void *ctx, int verify, int resume);
 
 /* Diagnostic: run the GET pipeline for `url` and write a JSON report
    (dns result/ip, curl code, http status, bytes) into `out_json`. */

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 lookup_tsv(title_id, url_out, url_sz);
-        return 0;
-
-    return lookup_prosperopatches(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>
@@ -24,10 +33,13 @@ 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;
     int              enabled;          /* user policy, persisted in config.json */
+    int              resumable;        /* a partial download is on disk */
+    long long        partial_bytes;    /* size of that partial, for the UI */
 } patchdl_title_t;
 
 int         patchdl_scan(patchdl_title_t **titles_out, size_t *count_out);
@@ -37,3 +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 "0.0.2"
+#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++)
+        for (int k = 0; k < 4 && ok; k++)
-            if (p[i] < 'A' || p[i] > 'Z') ok = 0;
+            if (p[k] < 'A' || p[k] > 'Z') ok = 0;
-        for (int i = 4; i < 9 && ok; i++)
+        for (int k = 4; k < 9 && ok; k++)
-            if (p[i] < '0' || p[i] > '9') ok = 0;
+            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.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}`,
 };
 
@@ -29,6 +30,7 @@ const fallback = {
     delete_pkg_after_install: true,
     verify_downloads: false,
     home_shortcut: true,
+    max_connections: 4,
     source_policy: {
       official: { allow_check: true, allow_download: true, allow_install: true },
       external: { allow_check: true, allow_download: true, allow_install: true },
@@ -48,6 +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",
     },
     {
@@ -56,6 +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",
     },
     {
@@ -64,6 +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",
     },
   ],
@@ -78,12 +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 }
 
@@ -116,7 +122,20 @@ function bindElements() {
     deleteAfterInstall: document.getElementById("deleteAfterInstall"),
     verifyDownloads: document.getElementById("verifyDownloads"),
     homeShortcut: document.getElementById("homeShortcut"),
+    connValue: document.getElementById("connValue"),
+    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"),
@@ -146,8 +165,13 @@ 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)
+    els.connMinus.addEventListener("click", () => setConnections(clampConn(state.config.max_connections) - 1));
+  if (els.connPlus)
+    els.connPlus.addEventListener("click", () => setConnections(clampConn(state.config.max_connections) + 1));
 }
 
 function setView(view) {
@@ -173,27 +197,27 @@ async function loadInitialData() {
   // /api/titles carries no client-only progress flags, so preserve them across a
   // refresh — otherwise an in-flight download/install flips back to a clickable
   // button mid-operation.
+  // Carry client-only flags across a refresh; the pool's job list is the source
+  // of truth for download state and is reconciled right after.
   const prev = new Map(state.titles.map((g) => [g.title_id, g]));
   titles.forEach((g) => {
     const old = prev.get(g.title_id);
-    // Carry client-only progress flags across a refresh — unless the server now
-    // reports the title up to date (the patch applied), in which case drop them.
     if (old && g.status !== "up_to_date") {
-      if (old.downloading) g.downloading = true;
       if (old.downloaded) g.downloaded = true;
       if (old.installing) g.installing = true;
+      if (old._autoInstalled) g._autoInstalled = true;
       if (old._localDownloading) g._localDownloading = true;
     }
   });
-  // Reconcile active downloads the server reports, so progress + Cancel show even
-  // after a hard reload or a download started from another session/device.
-  const activeDl = new Set(downloads.map((d) => d.title_id));
-  titles.forEach((g) => { if (activeDl.has(g.title_id)) g.downloading = true; });
 
   state = { ...state, status, config, titles, downloads };
+  reconcileFromJobs(downloads);
 
   render();
-  if (state.downloads.length) startDownloadPolling();
+  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.");
 }
 
@@ -225,6 +249,42 @@ 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;
+function clampConn(n) {
+  n = parseInt(n, 10);
+  if (!Number.isFinite(n)) n = 4;
+  return Math.max(CONN_MIN, Math.min(CONN_MAX, n));
+}
+
+function renderConnStepper() {
+  const n = clampConn(state.config.max_connections);
+  if (els.connValue) els.connValue.textContent = String(n);
+  if (els.connMinus) els.connMinus.disabled = n <= CONN_MIN;
+  if (els.connPlus) els.connPlus.disabled = n >= CONN_MAX;
+}
+
+let connSaveTimer = null;
+// Stepper +/-: update + re-render immediately, then persist just this field
+// (debounced) so rapid taps collapse into one POST and other unsaved form
+// fields stay untouched. The server applies the new count live (no restart).
+function setConnections(n) {
+  const v = clampConn(n);
+  if (v === clampConn(state.config.max_connections)) { renderConnStepper(); return; }
+  state.config.max_connections = v;
+  renderConnStepper();
+  clearTimeout(connSaveTimer);
+  connSaveTimer = setTimeout(async () => {
+    try {
+      await postJson(API.config, { max_connections: v });
+      showToast(`Parallel connections: ${v}`);
+    } catch (e) {
+      showToast("Could not save connections — API not reachable.");
+    }
+  }, 450);
 }
 
 function renderSettings() {
@@ -234,6 +294,7 @@ function renderSettings() {
   els.deleteAfterInstall.checked = Boolean(state.config.delete_pkg_after_install);
   if (els.verifyDownloads) els.verifyDownloads.checked = Boolean(state.config.verify_downloads);
   if (els.homeShortcut) els.homeShortcut.checked = state.config.home_shortcut !== false;
+  renderConnStepper();
   els.allowlistHosts.replaceChildren(...(state.config.cdn_allowlist || []).map((host) => {
     const chip = document.createElement("span");
     chip.className = "host-chip";
@@ -246,6 +307,7 @@ function renderSettings() {
 /* ---------------- games ---------------- */
 
 function renderGames() {
+  renderGlobalStatus();
   const visible = state.titles.filter(matchesFilter).filter(matchesQuery);
   els.gameGrid.replaceChildren();
 
@@ -261,12 +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" && isDownloadAllowed(game)) return "updatable";
-  if (game.status === "available") return "updatable";
+  if (!sourcePolicy(game).allow_install && !sourcePolicy(game).allow_download) return "blocked";
   if (game.status === "incompatible_fw") return "needsfw";
   return "uptodate";
 }
@@ -311,8 +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">
@@ -324,8 +394,8 @@ function createGameCard(game) {
 
   const actions = document.createElement("div");
   actions.className = "card-actions";
-  const act = tileButton(game);
+  [primaryButton(game), stopButton(game)].forEach((act) => {
-  if (act) {
+    if (!act) return;
     const btn = document.createElement("button");
     btn.className = `row-button is-${act.variant}`;
     btn.textContent = act.label;
@@ -333,16 +403,7 @@ function createGameCard(game) {
     if (act.disabled) btn.disabled = true;
     else btn.addEventListener("click", () => runTitleAction(game.title_id, act.action));
     actions.appendChild(btn);
-  }
+  });
-  // Delete a finished (not-yet-installed) download.
-  if (game.downloaded && !game.installing && !game.downloading) {
-    const del = document.createElement("button");
-    del.className = "row-button is-ghost";
-    del.textContent = "Delete";
-    del.title = "Delete the downloaded package";
-    del.addEventListener("click", () => cancelDownload(game.title_id));
-    actions.appendChild(del);
-  }
 
   row.append(lead, body, actions);
   card.appendChild(row);
@@ -357,6 +418,26 @@ 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">${installProgressHtml(game)}</div>
+    `;
+    card.appendChild(note);
+  } else if (game.resumable && game.partial_bytes > 0) {
+    // ---- paused partial (survived a reboot) ----
+    const note = document.createElement("div");
+    note.className = "card-progress";
+    note.innerHTML = `
+      <div class="progress-meta">
+        <span>Paused — <b>${formatBytes(game.partial_bytes)}</b> downloaded</span>
+        <span>Resume to continue</span>
+      </div>
+    `;
+    card.appendChild(note);
   }
 
   return card;
@@ -382,21 +463,33 @@ function buildToggle(game) {
   return toggle;
 }
 
-// The single morphing action button: blue Update/Download/Install, or amber
+// Primary play/pause button (green to go, amber while downloading). Fixed width
-// Cancel while a download runs. Fixed width (CSS) so the label never reflows.
+// (CSS) so the label never reflows. Returns null when there is nothing to do.
-function tileButton(game) {
+function primaryButton(game) {
   if (game.installing) return { label: "Installing…", variant: "ghost", disabled: true };
-  if (game.downloading) return { label: "Cancel", action: "cancel", variant: "cancel", hint: "Stop the download and delete the partial file" };
+  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 && isDownloadAllowed(game))
-  if (game.downloaded && game.status === "available")
+    return { label: "Resume", action: "download", variant: "update", hint: "Continue the paused download where it stopped." };
+  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." };
 }
 
+// Red stop button: present whenever there is a download to stop or discard.
+// Cancel stops AND deletes (unlike Pause, which keeps the partial).
+function stopButton(game) {
+  if (game.installing) return null;
+  if (game.downloading || game.resumable || game.downloaded)
+    return { label: "Cancel", action: "cancel", variant: "cancel", hint: "Stop and delete the download." };
+  return null;
+}
+
 function statusPill(game) {
   if (game.installing) return `<span class="pill warn">Installing…</span>`;
   if (game.status === "checking") return `<span class="pill">Checking…</span>`;
@@ -407,6 +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>`;
@@ -427,6 +524,7 @@ function progressMetaHtml(d) {
   const done = Number(d.bytes) || 0;
   const total = Number(d.total_bytes) || 0;
   const speed = Number(d._speed) || 0;
+  if (d.state === "queued") return `<span>Queued — waiting for a free slot</span>`;
   const parts = [];
   parts.push(`<span><b>${formatBytes(done)}</b>${total > 0 ? ` / ${formatBytes(total)}` : ""}</span>`);
   if (speed > 0) parts.push(`<span><b>${formatBytes(speed)}/s</b></span>`);
@@ -436,6 +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;
@@ -449,65 +557,218 @@ function stopDownloadPolling() {
   downloadPollTimer = null;
 }
 
+// Map the pool's job list onto per-title flags, and auto-install once a job
+// finishes if "install after download" is on.
+function reconcileFromJobs(jobs) {
+  const byId = new Map((jobs || []).map((j) => [j.title_id, j]));
+  state.titles.forEach((g) => {
+    const j = byId.get(g.title_id);
+    if (!j) {
+      // The pool never produced a job for our local intent: time it out so the
+      // card can't wedge in "Downloading" forever (server restart between POST
+      // and poll, or an unexpected response shape).
+      if (g._localDownloading && g._localSince &&
+          Date.now() - g._localSince > 12000) {
+        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;
+      g._wasActive = true;
+    } else if (j.state === "paused") {
+      g.downloading = false;
+      g.resumable = true;
+      g.partial_bytes = Number(j.bytes) || g.partial_bytes || 0;
+      g._wasActive = false;
+    } else if (j.state === "done") {
+      g.downloading = false;
+      g.resumable = false;
+      g.downloaded = true;
+      g._wasActive = false;
+      if (state.config.install_after_download && isInstallAllowed(g) &&
+          !g.installing && !g._autoInstalled) {
+        g._autoInstalled = true;
+        doInstall(g);
+      }
+    } else if (j.state === "error") {
+      // The server keeps the partial + sidecar (resumable) on a post-retry
+      // network failure. Reflect that so primaryButton shows "Resume" and the
+      // red Cancel stays available to delete the kept partial.
+      const bytes = Number(j.bytes) || 0;
+      if (g._wasActive) {
+        showToast(`${g.name}: download failed${bytes > 0 ? " — partial kept, press Resume to continue" : "."}`);
+      }
+      g._wasActive = false;
+      g.downloading = false;
+      g.resumable = bytes > 0;
+      g.partial_bytes = bytes || g.partial_bytes || 0;
+    }
+  });
+}
+
+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 downloads;
+  let jobs;
   try {
     const response = await fetch(API.downloads, { cache: "no-store" });
     if (!response.ok) throw new Error(`HTTP ${response.status}`);
-    downloads = await response.json();
+    jobs = await response.json();
   } catch (error) {
     return; // keep last state on a transient failure
   }
 
   const now = Date.now();
-  const activeIds = new Set();
+  const ids = new Set();
-  downloads.forEach((d) => {
+  jobs.forEach((j) => {
-    activeIds.add(d.title_id);
+    ids.add(j.title_id);
-    const done = Number(d.bytes) || 0;
+    const done = Number(j.bytes) || 0;
-    const prev = dlMeta[d.title_id];
+    const prev = dlMeta[j.title_id];
     if (prev && now > prev.t) {
       if (done >= prev.bytes) {
         const inst = ((done - prev.bytes) * 1000) / (now - prev.t); // bytes/s
         prev.speed = prev.speed ? prev.speed * 0.5 + inst * 0.5 : inst; // smoothed
       } else {
-        prev.speed = 0; // counter went backwards -> re-baseline, no stale speed
+        prev.speed = 0; // counter went backwards -> re-baseline
       }
     }
-    const meta = prev || (dlMeta[d.title_id] = { speed: 0 });
+    const meta = prev || (dlMeta[j.title_id] = { speed: 0 });
     meta.bytes = done;
     meta.t = now;
-    d._speed = meta.speed || 0;
+    j._speed = meta.speed || 0;
   });
-  Object.keys(dlMeta).forEach((id) => { if (!activeIds.has(id)) delete dlMeta[id]; });
+  Object.keys(dlMeta).forEach((id) => { if (!ids.has(id)) delete dlMeta[id]; });
 
-  state.downloads = downloads;
+  state.downloads = jobs;
-
-  // Reconcile downloading flags with the server. A structural change (a download
-  // appeared or finished) needs a full re-render to add/remove the progress block
-  // and morph the button; otherwise update the bar in place.
   const before = downloadingIds();
-  state.titles.forEach((g) => {
+  reconcileFromJobs(jobs);
-    if (activeIds.has(g.title_id)) g.downloading = true;
-    else if (g.downloading && !g._localDownloading) g.downloading = false;
-  });
   if (downloadingIds() !== before) renderGames();
   else applyDownloadProgress();
 
-  if (!downloads.length && !state.titles.some((g) => g.downloading)) {
+  const busy = jobs.some((j) => j.state === "active" || j.state === "queued") ||
-    if (++emptyPolls >= 3) stopDownloadPolling();
+               state.titles.some((g) => g._localDownloading);
-  } else {
+  if (!busy) { if (++emptyPolls >= 3) stopDownloadPolling(); }
-    emptyPolls = 0;
+  else emptyPolls = 0;
-  }
 }
 
 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
+    // jobs linger in the pool list but have no .progress bar — skip them so a
+    // missing tile for a non-downloading title doesn't force a full rebuild.
+    const g = state.titles.find((t) => t.title_id === d.title_id);
+    if (!g || !g.downloading) return;
     const card = els.gameGrid.querySelector(`[data-title-id="${d.title_id}"]`);
     const bar = card && card.querySelector(".card-progress .progress > i");
     const meta = card && card.querySelector(".card-progress .progress-meta");
@@ -549,6 +810,7 @@ async function saveConfig() {
     delete_pkg_after_install: els.deleteAfterInstall.checked,
     verify_downloads: els.verifyDownloads ? els.verifyDownloads.checked : Boolean(state.config.verify_downloads),
     home_shortcut: els.homeShortcut ? els.homeShortcut.checked : state.config.home_shortcut !== false,
+    max_connections: clampConn(state.config.max_connections),
   };
   try {
     await postJson(API.config, config);
@@ -564,19 +826,55 @@ 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) {
   game.downloading = true;
-  game._localDownloading = true; // this client owns it; don't let a poll clear it
+  game._localDownloading = true;   // until the pool reports a job for this title
+  game._localSince = Date.now();   // bounded in reconcileFromJobs if no job appears
+  game._autoInstalled = false;
   state.downloads = state.downloads.filter((i) => i.title_id !== game.title_id);
-  state.downloads.push({ title_id: game.title_id, name: game.name, version: game.compatible_version || "", progress: 0, bytes: 0, total_bytes: 0 });
+  state.downloads.push({ title_id: game.title_id, name: game.name,
-  state.logs.push(`[${timeNow()}] Download started: ${game.title_id} ${game.compatible_version}`);
+                         version: game.compatible_version || "",
+                         state: "queued", progress: 0, bytes: 0, total_bytes: 0 });
   renderGames();
-  renderLogs();
   startDownloadPolling();
 
-  let r;
   try {
-    r = await postJson(API.action(game.title_id, "download"), {});
+    const r = await postJson(API.action(game.title_id, "download"), {});
+    if (r && r.downloaded && r.already) {
+      game.downloading = false;
+      game._localDownloading = false;
+      game.downloaded = true;
+      renderGames();
+    } else {
+      state.logs.push(`[${timeNow()}] Download queued: ${game.title_id} ${game.compatible_version || ""}`);
+      renderLogs();
+    }
   } catch (error) {
     game.downloading = false;
     game._localDownloading = false;
@@ -584,34 +882,14 @@ async function doDownload(game) {
     const why = reasonText(error);
     state.logs.push(`[${timeNow()}] download ${game.title_id} blocked: ${why}`);
     showToast(`${game.name}: ${why}`);
-    renderGames(); renderLogs(); stopDownloadPolling();
+    renderGames(); renderLogs();
-    return false;
   }
-
-  game.downloading = false;
-  game._localDownloading = false;
-  state.downloads = state.downloads.filter((i) => i.title_id !== game.title_id);
-
-  // Cancel / soft failure returns HTTP 200 with ok:false (not thrown).
-  if (!r || r.ok === false) {
-    game.downloaded = false;
-    const what = r && r.cancelled ? "cancelled" : "failed";
-    state.logs.push(`[${timeNow()}] Download ${what}: ${game.title_id}`);
-    showToast(`${game.name}: download ${what}.`);
-    renderGames(); renderLogs(); stopDownloadPolling();
-    return false;
-  }
-
-  game.downloaded = true;
-  const sz = r && r.bytes ? formatBytes(r.bytes) : "?";
-  state.logs.push(`[${timeNow()}] Downloaded ${game.title_id} ${game.compatible_version} (${sz}, internal)`);
-  showToast(`${game.name}: downloaded ${sz}.`);
-  renderGames(); renderLogs(); stopDownloadPolling();
-  return true;
 }
 
 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 {
@@ -625,7 +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(`${game.name}: installing update.`);
+  startInstallPolling();
   renderGames(); renderLogs();
   return true;
 }
@@ -640,7 +919,13 @@ async function cancelDownload(titleId) {
   } catch (error) {
     showToast(`${game ? game.name : titleId}: ${reasonText(error)}`);
   }
-  if (game) { game.downloading = false; game._localDownloading = false; game.downloaded = false; }
+  if (game) {
+    game.downloading = false;
+    game._localDownloading = false;
+    game.downloaded = false;
+    game.resumable = false;
+    game.partial_bytes = 0;
+  }
   state.downloads = state.downloads.filter((i) => i.title_id !== titleId);
   state.logs.push(`[${timeNow()}] Download cancelled / deleted: ${titleId}`);
   renderGames(); renderLogs();
@@ -650,10 +935,23 @@ async function cancelDownload(titleId) {
 async function runTitleAction(titleId, action) {
   const game = state.titles.find((i) => i.title_id === titleId);
   if (!game) return;
-  if (action === "download") await doDownload(game);
+  // "update" and "download" both just enqueue; for "update" (install-after-
+  // download on) the reconciler auto-installs once the pool reports it done.
+  if (action === "download" || action === "update") await doDownload(game);
   else if (action === "install") await doInstall(game);
+  else if (action === "pause") await doPause(game);
   else if (action === "cancel") await cancelDownload(titleId);
-  else if (action === "update") { if (await doDownload(game)) await doInstall(game); }
+}
+
+// Pause only sends the signal; the in-flight doDownload() request returns its
+// "paused" result and updates the card (resumable + partial bytes).
+async function doPause(game) {
+  try {
+    await postJson(API.action(game.title_id, "pause"), {});
+    showToast(`${game.name}: pausing…`);
+  } catch (error) {
+    showToast(`${game.name}: ${reasonText(error)}`);
+  }
 }
 
 function updateGame(titleId, patch) {
@@ -671,11 +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
   );
 }
@@ -704,6 +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.",
@@ -711,6 +1025,8 @@ const REASON_TEXT = {
   download_in_progress: "Another download is already running.",
   piece_verify_failed: "A downloaded piece failed its SHA-256 check.",
   title_disabled: "This title is disabled.",
+  download_paused: "Download paused.",
+  not_downloading: "Nothing is downloading for this title.",
 };
 function reasonText(error) {
   const r = error && error.body && error.body.reason;

web/index.html

@@ -39,7 +39,7 @@
           <div class="brand-mark">PD</div>
           <div>
             <strong>PatchDL</strong>
-            <span>by Knutwurst · v0.0.2</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 class="is-selected" data-filter="updatable" aria-pressed="true">Updatable</button>
-              <button data-filter="updatable" aria-pressed="false">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>
 
@@ -186,6 +214,17 @@
                   <span class="track"></span>
                 </span>
               </label>
+              <div class="switch-row">
+                <span>
+                  <strong>Parallel download connections</strong>
+                  <em>1–16 · applies live, no payload restart</em>
+                </span>
+                <div class="stepper" role="group" aria-label="Parallel download connections">
+                  <button type="button" class="stepper-btn" id="connMinus" aria-label="Fewer connections">−</button>
+                  <output class="stepper-value" id="connValue" aria-live="polite">4</output>
+                  <button type="button" class="stepper-btn" id="connPlus" aria-label="More connections">+</button>
+                </div>
+              </div>
             </div>
 
             <div class="allowlist">

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;
@@ -331,10 +430,13 @@ h2 { font-size: 18px; line-height: 1.2; }
   width: 100%;            /* fills the fixed-width actions column -> never reflows */
   padding: 0 12px;
 }
-.row-button.is-update  { border-color: var(--blue);  color: #04111f; background: var(--blue); }
+/* go = green (Update / Resume / Install), pause = amber, cancel/stop = red */
-.row-button.is-update:hover  { background: var(--blue-dark); }
+.row-button.is-update  { border-color: var(--green); color: #04150c; background: var(--green); }
-.row-button.is-cancel  { border-color: var(--amber); color: #1c1402; background: var(--amber); }
+.row-button.is-update:hover  { background: var(--green-dark); }
-.row-button.is-cancel:hover  { background: var(--amber-dark); }
+.row-button.is-pause   { border-color: var(--amber); color: #1c1402; background: var(--amber); }
+.row-button.is-pause:hover   { background: var(--amber-dark); }
+.row-button.is-cancel  { border-color: var(--red);   color: #1a0606; background: var(--red); }
+.row-button.is-cancel:hover  { background: #ff8a8a; }
 .row-button.is-ghost   { background: transparent; color: var(--muted); }
 .row-button.is-ghost:hover { color: var(--ink); border-color: var(--muted); }
 .row-button:disabled { opacity: 0.6; cursor: default; }
@@ -392,6 +494,34 @@ h2 { font-size: 18px; line-height: 1.2; }
   background: var(--surface-2);
   border-radius: 8px;
 }
+
+/* number stepper — big, controller-friendly targets with a clear focus ring
+   (the UI is operated by the PS5 controller via the home tile). */
+.stepper { display: inline-flex; align-items: center; gap: 12px; flex: none; }
+.stepper-btn {
+  width: 54px; height: 54px;
+  display: inline-flex; align-items: center; justify-content: center;
+  font-size: 30px; line-height: 1; font-weight: 600;
+  color: var(--ink);
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: 14px;
+  cursor: pointer;
+  -webkit-tap-highlight-color: transparent;
+  transition: background .12s ease, border-color .12s ease, transform .07s ease;
+}
+.stepper-btn:hover { background: var(--surface); border-color: var(--muted); }
+.stepper-btn:active { transform: scale(0.93); background: var(--green-soft); border-color: var(--green); }
+/* :focus (not only :focus-visible) so the controller's focus is always obvious */
+.stepper-btn:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px var(--green-soft); }
+.stepper-btn:disabled { opacity: 0.32; cursor: default; transform: none; }
+.stepper-value {
+  min-width: 52px;
+  text-align: center;
+  font-size: 26px; font-weight: 700;
+  font-variant-numeric: tabular-nums;
+  color: var(--ink);
+}
 .switch-row > span:first-child strong { display: block; font-size: 14px; }
 .switch-row > span:first-child em { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; font-style: normal; }