There are several popular tools for installing NSP updates. is currently the most recommended for its simplicity and reliability. Method A: Using DBI (Easiest for PC Transfer) Connect your Switch to your PC via a USB-C cable . Open the DBI application from your Switch's homebrew menu.
: Ensure your console is running Custom Firmware (CFW) like Atmosphere. RETRNTMONISLND-(USA)-NSwTcH-NSP-Update104-Ziper...
The subject line refers to the Nintendo Switch game Return to Monkey Island . Specifically, it is a Nintendo Submission Package (NSP) file for the USA region, which includes the base game and the Update 1.0.4 . There are several popular tools for installing NSP updates