When emulating a Switch game, Ryujinx needs access to these firmware components because games rely on them for basic operations like saving data, handling controllers, displaying text, or using online features (to the extent supported).

Firmware is required to handle Mii data used in games like Mario Kart 8 Deluxe .

Installing firmware is the most vital step in setting up Ryujinx. Without it, you essentially have a car with no engine. Once the firmware is installed and the version number appears in your settings, you are ready to load your games, configure your input, and enjoy Nintendo Switch titles on your PC or Steam Deck.

Ryujinx include any copyrighted firmware. You must provide it yourself.