Mario Kart 8 Deluxe -nsp--ch--update 3.0.3-.rar Direct

It sounds like you’re referencing a file named something like Mario Kart 8 Deluxe -NSP--CH--Update 3.0.3-.rar. That appears to be a pirated or cracked Nintendo Switch game file (an NSP update for Mario Kart 8 Deluxe with Chinese language support, version 3.0.3, compressed in RAR format).

Conclusion

The latest maintenance update for the definitive racing experience on Nintendo Switch has arrived. If you are managing your digital library or looking to keep your setup current, understanding the specific contents of the Mario Kart 8 Deluxe Update 3.0.3 is essential. Mario Kart 8 Deluxe -NSP--CH--Update 3.0.3-.rar

1. Highlight the game on the Home Menu
2. Press + → Software Update → Via the Internet