GTA 5 Switch Gameconfig.xml Updater

A Windows desktop application for updating gameconfig.xml in GTA V Switch update.rpf files without using OpenIV or CodeWalker directly.

What it does

• Allows users to select their own gameconfig.xml file
• Opens the update.rpf file from their GTA V Switch installation
• Replaces the existing gameconfig.xml inside the RPF with the user's version
• Saves the updated RPF to a user-selected location

Requirements

To run the published exe:

• Windows 10/11 x64 (nothing else — the build is self-contained and portable)

To build it yourself:

• Windows 10/11 x64
• .NET 4.8 SDK/Dev Pack
• Git

Usage

1. Launch GTASwitchGCUpdater.exe
2. Click Browse next to "1. Select gameconfig.xml" and choose your gameconfig.xml file
3. Click Browse next to "2. Select update.rpf file" and choose your GTA V Switch update.rpf
4. Click 3. Update RPF
5. Choose a location other than where it is to save the updated update.rpf file
6. Done! Replace your original update.rpf with the newly generated file

• If you want to edit your GTA radio, the same method applies but with different .rpf files and your own music files. -> gta-radio-editor

Build from source

Clone with submodules to include CodeWalker Core:

git clone --recurse-submodules https://github.com/Geekmaxxer/GTA5SwitchGCUpdater
cd gta-gameconfig-updater\GTASwitchGCUpdater
dotnet restore .\GTA5SwitchGCUpdater\GTA5SwitchGCUpdater.csproj
dotnet msbuild GTA5SwitchGCUpdater\GTA5SwitchGCUpdater.csproj `
  -target:BuildNet48SingleExe `
  -property:Configuration=Release `
  -property:TargetFramework=net48

The project file already sets RuntimeIdentifier, SelfContained, and PublishSingleFile, so no extra command-line flags are needed — the command above is enough to produce a fully portable, single-file .exe.

The build will be output to:

GTA5SwitchGCUpdater\bin\Release\net48

GTA5SwitchGCUpdater.exe in that folder is the finished, portable app: it's a single file with no dependent DLLs, requires no .NET runtime installed on the target machine, and can be copied to and run from anywhere (a USB drive, another PC, etc.).

Note: because it's self-contained, the exe bundles its own copy of the .NET runtime, so

Update checking

On startup, the app silently checks /releases/latest on GitHub and compares its tag to the running app's version (shown in small text in the status bar, and in the title bar). That endpoint always resolves to the newest published, non-draft, non-prerelease release, so a beta build with a higher-looking version number - like the earlier v0.1-beta/v0.2-beta/v0.3-beta tags - is never mistaken for the latest stable release.

If a newer version is found, a small dialog offers Take me there (opens the release page in your browser) or I'm good (dismisses it for the rest of that session). There's no persisted "don't ask again" - closing and reopening the app checks again.

If you're maintaining this repo: bump AppVersion.Current in AppVersion.cs (and <Version> in the .csproj) every time you cut a new version, and make sure it's published as an actual GitHub Release with the "pre-release" checkbox left unchecked - a bare git tag, or a release still flagged as pre-release, won't be picked up by /releases/latest. If the check fails for any reason (offline, rate-limited, no stable release published yet), it fails silently and the app works normally.

Notes on compatibility

• The application uses CodeWalker Core for RPF parsing and serialization
• The output RPF is a new file, providing a simple rollback path
• Always keep a backup of your original update.rpf before using this tool
• This tool is designed specifically for Switch GTA V builds

Credits

• CodeWalker Core for RPF handling

License

GNU General Public License v3.0 - See LICENSE file for details.