If you have obtained an NSP file from a legitimate source:
This update was primarily a stability patch to resolve a game-breaking bug. Version 1.0.1 Patch Notes yoshis crafted world switch nsp update link
To download and install the Yoshi's Crafted World Switch NSP update, follow these steps: If you have obtained an NSP file from
Pick 1, 2, or 3 (or say "all") and I’ll proceed. follow these steps: Pick 1