While Nintendo did not publish these, play testers have confirmed minor collision adjustments:
Unlike the 3.0.0, 3.0.1, or 3.0.2 updates, this version does not add new tracks, characters, or Mii racing suits. How to Download Mario Kart 8 Deluxe 3.0.3 Update mario kart 8 deluxe 3.0.3 update download
was released on September 11, 2024 . This minor update was primarily a security patch focused on fixing a flaw in the game's netcode. Patch Notes Summary While Nintendo did not publish these, play testers
Version 3.0.3 of Mario Kart 8 Deluxe is a minor , not a content update. It follows the major 3.0.0 update (which added the Booster Course Pass Wave 6 and new characters). Players who wish to play online or access recent features must download this patch. Patch Notes Summary Version 3
Because this is a mandatory patch for online play, your Switch likely handles this automatically. However, if you are stuck on a previous version (3.0.1 or 3.0.2) or playing offline, follow these steps: