Undertale-nsp-update-romslab.rar

Use a tool like WinRAR or 7-Zip to extract the .nsp file from the .rar archive.

Ensure your custom firmware (CFW) is up to date to avoid installation errors. Always back up your save data before applying updates. Undertale-NSP-UPDATE-ROMSLAB.rar

Use your preferred title manager (such as Tinfoil, DBI, or Goldleaf) to install the update. Use a tool like WinRAR or 7-Zip to extract the