Downloading and using such files involves significant risks:
Connecting a console with modified software or pirated games to Nintendo’s servers typically results in a permanent hardware ban from online services. DRAQUST-TRESURS-(JPN)-NSwTcH-NSP-[3DLCPack]-Zip...
The "NSP" extension is a Nintendo Submission Package file format used for installing games on modified (jailbroken) Nintendo Switch consoles. Downloading and using such files involves significant risks: