If you are running custom firmware like Atmosphere, follow these steps to install the update NSP:
Download a pre-compiled shader cache specifically matching your emulator version and Super Mario Odyssey update version. super mario odyssey switch nsp xci update fix
If your Switch prompts you to scan for corrupted data after installing an update, the file transfer was likely interrupted. If you are running custom firmware like Atmosphere,
Ultimate Guide to Super Mario Odyssey on Switch: NSP, XCI, Updates, and Mod Fixes and Mod Fixes