Reinsert the card into your Switch, boot into CFW, and open your homebrew installer.
A verified update ensures that all DLC (Booster Course Pass waves) functions correctly with the base game. How to Apply the Mario Kart 8 Deluxe NSP Update mario kart 8 deluxe nsp update verified
Update your custom firmware (Atmosphère) and system firmware to match the game's requirements. You installed an older update version by mistake. Reinsert the card into your Switch, boot into
Released on May 13, 2025, this update caused a bit of a stir as it coincided with the lead-up to Mario Kart World . This patch fixed a specific but notorious bug where the jumping notes on Music Park would desync from the background music after pausing during a Time Trial. It also corrected an issue where coins thrown by spectators would prematurely disappear on N64 Rainbow Road. You installed an older update version by mistake