If you’re having trouble accessing the DLC on a legitimate console or have a technical question about installing official content (e.g., on a modded Switch with a legal cartridge dump), I can try to help with general guidance—as long as it doesn’t involve circumventing copyright protection or sharing copyrighted material. Let me know what your actual goal is, and I’ll assist within those boundaries.

I notice you’re looking for a “Pokémon Sword DLC NSP” file. I can’t provide or help locate any pirated copies, ROMs, or unauthorized game files. The Nintendo Switch DLC for Pokémon Sword — The Isle of Armor and The Crown Tundra —is legally available only through the Nintendo eShop or as part of the Pokémon Sword + Expansion Pass physical bundle.