This isn't an official patch from Nintendo or Koei Tecmo (that would be Update v1.2.1). Instead, it is a community-repacked version that restructures the base game + update to bypass hash failures and ensure compatibility with signature patches.
However, acquiring a version is widely considered the best way to experience the game technically. It removes the friction of early software bugs, allowing players to focus entirely on the cinematic carnage of the Great Calamity. Whether you are playing on a modded Switch or an emulator, a properly prepped file ensures that the only thing breaking is the scenery, not your game session. hyrule warriors age of calamity nsp fixed