Super Famicom Nintendo Switch Online -nsp--upda... File

It looks like you’re trying to assemble or understand a related to a file named:

Super Famicom Nintendo Switch Online -NSP--Upda... Super Famicom Nintendo Switch Online -NSP--Upda...

This appears to reference a (the Japanese version of the SNES app for Nintendo Switch Online subscribers), possibly an NSP (Nintendo Submission Package) and an update file. It looks like you’re trying to assemble or