Leo tried to put the controller down, but his fingers wouldn't move. On the screen, his Mii turned around, looked directly at the camera, and waved. The room went cold as the Switch’s screen bled into a pure, blinding white.
(or its successors) also require these update files to keep their game libraries current. Safety & Compatibility Corruption
It looks like you're asking for a write-up related to and a file named nspchupdate 303rar upd — which seems to reference a pirated update file (NSP + CHT update, possibly with a .rar archive and update version).