Your Nintendo Switch SD card should be formatted to FAT32 to prevent file corruption (even though it has a 4GB file size limit, it is the most stable for homebrew).

Before handling NSP files, ensure your device and environment are ready:

After installation, hover over the game icon on your Home Menu, press the (+) button , and navigate to "Software Information" -> "Downloadable Content" to verify all three items are listed as "Installed."

Place the NSP file into a folder on your SD card (e.g., /switch/tinstall/ ).

If you have separate NSP files for the game and the DLC, you can use PC tools like SAUCY or NSC_Builder to merge them into a single "Super NSP" before installing. Important Legal & Safety Note

Since your package includes a "3DLCPack," the installer should automatically detect and install the base game plus the three pieces of DLC.