Unlike major updates that added DLC courses or characters, version 3.0.3 contained no changes to graphics, sound, or game balance.
Mario Kart 8 Deluxe – Finding Update v3.0.3 (or latest) safely + NSP management tips mario kart 8 deluxe nspchupdate 303rar link
This is a standard file format for Nintendo Switch packages used primarily for digital game data and updates. Unlike major updates that added DLC courses or