Searching for an "UPDATE" file for a Switch version of Strive presents another problem. Because there is no official release, there are no official patch notes or update files pushed to the Switch servers.
For a fighting game where timing is everything, these technical hurdles make the game nearly unplayable competitively. The input lag caused by low framerates destroys the "feel" of the game that Arc System Works meticulously crafted. Guilty Gear -Strive- Switch NSP XCI UPDATE
If you’re looking for update files (NSP/XCI), please remember to and use official tools. Piracy isn’t supported here. Searching for an "UPDATE" file for a Switch
Update game Switch | Surviving the Aftermath - PLAION Support you likely have a region mismatch.
If the Switch tells you the data is corrupted after installing the NSP update, you likely have a region mismatch.