The file you are referring to, Super.Mario.Maker.2.v3.0.2.NSP.Update.rar , is a compressed archive containing an update for the game Super Mario Maker 2 on the Nintendo Switch. This specific update (v3.0.2) is a minor patch released by Nintendo to address several issues and improve the overall gameplay experience. Official Update Method
This update followed the major "World Maker" (v3.0.0) update and focused primarily on: Super.Mario.Maker.2.v3.0.2.NSP.Update.rar
The safest and most straightforward way to update your game is through the official Nintendo Support method: The file you are referring to, Super
: Downloading game files from third-party sources can expose your console to malware or lead to a ban from Nintendo's online services. Official updates are always recommended for stability and security. Version 3.0.2 Highlights Official updates are always recommended for stability and
: Resolving specific issues that occurred after the massive content drop in v3.0.0.
: To use these files, a console is usually running custom firmware (CFW).