The current verified way to update your game is through official Nintendo channels:
Ensure the Update NSP matches the Title ID of your base game (Region-locking can prevent updates from installing). red dead redemption switch rom nsp update verified
Updating on the Nintendo Switch (and the newer Nintendo Switch 2) is a straightforward process for official owners, but it becomes more complex for those using modified consoles with NSP files. The current verified way to update your game