Connect your Switch to a PC via USB, open DBI , and use the MTP Responder to drag and drop update NSP files into the "SD Card Install" folder.

Select and then Via the Internet to check for and install available updates automatically. Manual NSP Installation (Modded Consoles/Emulators):

These applications allow you to browse and install NSP updates directly from an SD card or via USB using tools like NS-USBloader .