The file you're referring to, "Pokemon Violet -NSP--Update 3.0.1-.rar", likely contains the update data for Pokémon Violet
Fixed "Dragon Cheer" TM requirements that previously caused logic errors. Pokemon Violet -NSP--Update 3.0.1-.rar
Step 3: Install Using Tinfoil (Switch)
The following fixes and adjustments are the main components of this update: Version 3.0.1 Patch Notes for Pokemon Scarlet and Violet The file you're referring to, "Pokemon Violet -NSP--Update
New Features in Update 3.0.1