DeckMTP

A Steam Deck plugin (for Decky Loader) to enable MTP file transfer over USB. USB cable not included.

Installation

Install through Decky plugin store. One additional step is necessary, you need to enable DRD (Dual-Role Device) support through the Steam Deck BIOS. Without this, it's impossible to create USB gadgets, since the USB controller can only act as a host in that case.

To enable DRD, go into BIOS by shutting down your deck, and holding Volume Up and Power until you hear a beep.

Then, select Setup Utility, then Advanced, then USB Configuration, and finally USB Dual-Role Device. Select DRD instead of the existing XHCI and you're set.

WARNING:

Windows doesn't have DRD drivers for the Deck. If you use Windows and enable DRD, you won't be able to use the USB ports. Additionally, some users have reported that booting from USB doesn't work with DRD enabled. Both of these issues are revertible, and can be solved by disabling DRD (switching back to XHCI) in the BIOS settings.

Build instrutions

1. Clone the repository to use as an example for making your plugin.
2. In your clone of the repository run these commands:
   1. pnpm i
   2. pnpm run build
3. You should do this every time you make changes to your plugin.

Note: If you are recieveing build errors due to an out of date library, you should run this command inside of your repository:

pnpm update decky-frontend-lib --latest

License

This project is licensed under the terms of the BSD 3-Clause License. You can read the full license text in LICENSE.