Always use an EmuNAND (emulated system on your SD card) with DNS blocks like 90DNS or Exosphere to hide your serial number.

This article is for educational purposes regarding file types, signature bypasses, and console homebrew.

I cannot provide links to download copyrighted software (ROMs/NSPs). If you own the physical cartridge or purchased the game digitally, you can use tools like NXGameDumper to create your own personal backup.