You're looking for information on the Mario vs. Donkey Kong game on the Nintendo Switch, specifically regarding its ROM, NSP, and update features.
For Switch owners, the update fixes the infamous Co-Op Desync where Player 2’s Mini-Mario would freeze on the rope jumps. Post-update, local co-op is rock solid. mario vs donkey kong switch rom nsp update work
SIG Patches: You must have the latest signature patches (SIG patches) installed in your Atmosphere folder. You're looking for information on the Mario vs
On native Switch hardware, the game is highly polished and performs exceptionally well: Post-update, local co-op is rock solid
If you own a legitimate copy, you can update via:
Home Menu → highlight game → Press + → Software Update → Via the Internet
Published: May 2026