Undertale-nsp-update-romslab.rar

Move the extracted .nsp file to your Switch's SD card.

Once installation is complete, launch the game from the home menu. Notes Requires the base game installed to function. Undertale-NSP-UPDATE-ROMSLAB.rar

Ensure your custom firmware (CFW) is up to date to avoid installation errors. Always back up your save data before applying updates. Move the extracted