The console will pull the 3.0.5 update directly from official servers. For CFW and Emulator Users

Emulators and CFW require up-to-date encryption keys (PROD.KEYS) extracted from your console. Because 3.0.5 is a newer patch, ensuring your keys match the required firmware version is necessary to avoid black screens or boot loops.

If you are a retail user or a homebrew enthusiast looking to update your copy of Mario Kart 8 Deluxe to version 3.0.5, the most secure methods involve utilizing your hardware natively. For Retail / Standard Users

If you are running custom firmware (like Atmosphere) or playing on PC emulators for archival and modding purposes, keeping your setup updated requires specific steps:

Are you performing this update on a or an emulator ? Do you plan to play online or locally ?

If your console is unmodified and connected to the internet, the process is automated: Ensure your Nintendo Switch is connected to Wi-Fi. Highlight the Mario Kart 8 Deluxe icon on your HOME menu. Press the (Plus) or - (Minus) button on your controller. Select Software Update and then choose Via the Internet .

Nintendo released the 3.0.5 patch on . Following the massive rollout of the Booster Course Pass waves, which doubled the game's track list, recent patches have focused entirely on stability, bug fixes, and netcode maintenance.