(Nintendo Submission Package) files are a common format for installing digital Nintendo Switch games and updates.
If you are looking for information on how to use this file, it generally requires a jailbroken or custom-firmware (CFW) enabled Nintendo Switch console to install, usually via homebrew applications like or Goldleaf . ASTNOBEXXL-TRFH-(USA)-NSwTcH-NSP-Update1037-Zip...
suggests this file contains a specific version patch for the game. (Nintendo Submission Package) files are a common format
Downloading or distributing copyrighted game files (.nsp) without owning the original software is illegal. Ensure any files obtained are for backup purposes of games you legally own. ASTNOBEXXL-TRFH-(USA)-NSwTcH-NSP-Update1037-Zip...