You must have the latest signature patches installed on your SD card; without these, the console will refuse to launch unauthorized NSP files. Step 2: Choosing an Installation Method
NSP (Nintendo Submission Package) is the standard format for eShop titles and DLC. DORASTRYOS-FOTGK-(USA)-NSwTcH-NSP-[3DLCPack]-Zi...
Indicates this specific package includes three pieces of downloadable content, likely bundled together for easier installation. Step 1: Preparation & Safety You must have the latest signature patches installed