As of RetroDECK 0.9.0b Ryujinx have made stopped development and is marked as Legacy. It will no longer receive any updates or support more and is working as-is.
The installed firmware must have have the same version at your keys and .nca files, you can't mix and match as that can lead to crashes and black screens!
You need to make sure that the keys and firmware are from the same version.
Generally do not install the firmware from games. Instead provide your own firmware and keys from your own device.
Ryujinx also requires the firmware to be installed via `RetroDECK Configurator` -> `Open Emulator` -> `Ryujinx` -> `Tools` -> `Install Firmware` -> `Install from XCI or ZIP`
From within Ryujinx `Right Click` on a game and select `Manage Title Updates` and then navigate to the update files you would like to install and press `Save`.
Read more on: [Ryujinx Configuraton Guide](https://github.com/Ryujinx/Ryujinx/wiki/Ryujinx-Setup-&-Configuration-Guide)
## Add DLC
From within Ryujinx `Right Click` on a game and select `Manage DLC` and then navigate to the update files you would like to install and press `Save`.
Read more on: [Ryujinx Configuraton Guide](https://github.com/Ryujinx/Ryujinx/wiki/Ryujinx-Setup-&-Configuration-Guide)
From within Ryujinx `Right Click` on a game and select `Open Mods Folder` and put the mods you need in it's correct folder then go back to enable via the interface.
Ryujinx has a very little capabilities for hotkeys currently. The key to Open the Ryujinx Menu is `F4` and you can access it on the radial menus on the Steam Deck or External Controllers.