A .rar file is simply a digital wrapper. It cannot be converted directly into an NSP file through a simple rename or a single-click file converter. Instead, the RAR archive must be unpacked to reveal the actual game files inside. Top Methods to Extract and Convert RAR to NSP
Download 7-Zip from the official website (avoid third-party downloaders that bundle adware). rar to nsp converter top
What are you using on your computer (Windows, Mac, or Linux)? rar to nsp converter top
Are you dealing with a or a multi-part archive ? rar to nsp converter top