It's crucial to address the elephant in the room: using NSP files for games you don't legitimately own carries significant risks.
Updated menus and compliance screens. How to Verify Your RDR Switch Update Status
According to verified reports from the scene:
Highlight Red Dead Redemption on your Switch Home Menu, press the + Button , select "Software Update," and choose "Via the Internet."
Security is the biggest risk when dealing with NSP files sourced outside the official Nintendo eShop. Installing an unverified or corrupted NSP can lead to a bricked console, a banned console, or malware injection into your custom firmware environment.