If you are looking to play the NSP file on a PC or Android device rather than a Switch:
: Use emulators like Ryujinx or Suyu [9, 16]. You will need to "dump" your system keys (prod.keys) from a physical Switch to make these work [9]. Download Sifu [01007B5017A12000][v0][US] nsp rar
On your PC, open dbibackend.exe , click and select your Sifu NSP [2]. If you are looking to play the NSP