Launch Yuzu, go to File > Open yuzu Folder .
Since official downloads are no longer available from the original source, users typically rely on community mirrors or personal dumps from their own hardware. yuzu emulator firmware download github
Firmware alone is not enough; you also need "prod.keys" to decrypt and run games. These should be placed in the keys folder within your main Yuzu directory. Switch-Emulators-Guide/Yuzu.md at main - GitHub Launch Yuzu, go to File > Open yuzu Folder