The safest and legal method to acquire these files for personal backup or emulation emulation purposes is to use a modified Nintendo Switch console to personally dump your legally purchased game cartridge (XCI) or your own digital eShop purchases (NSP) using tools like .
The base game plus all DLC and the 3.0.0 update require significant space on your microSD card. Benefits of the Final 3.0.0 Update mario kart 8 deluxe switch nsp xci update 30 full
Spanning classic retro courses from the SNES to Mario Kart Tour. The safest and legal method to acquire these