Spltoon3-(usa)-nswtch-nsp-update121-ziperto.rar -

Ensure your system firmware version is compatible with Update 1.2.1 (typically version 15.0.0 or higher is recommended for this specific update).

A Nintendo Switch running up-to-date Atmosphère .

Once extracted, you should see an .nsp file. This is the actual update file. SPLTOON3-(USA)-NSwTcH-NSP-Update121-Ziperto.rar

Navigate to (or "NAND Install" if you prefer).

the extracted .nsp update file into that folder. Ensure your system firmware version is compatible with

If the game fails to launch after installation, ensure your Sigpatches are updated to match your current firmware and Atmosphère version.

Right-click the file and select or Extract to folder . This is the actual update file

Wait for the transfer to complete. DBI will automatically install the update and notify you when finished. Return to the Switch Home Menu. Highlight the Splatoon 3 icon. Press the (+) button to open Options.