A strict rule of Switch emulation is that your firmware version must match or be compatible with your key version. For example, if you are using firmware version 18.0.0, your prod.keys must also be from an 18.0.0 system dump. Locate your fresh prod.keys and title.keys .
Switch Prod Keys 1412 Description: Fixed. Assignee: Me. Priority: Critical. switch prod keys 1412 fixed