NSP vs XCI: Which Format Should You Choose?
When downloading Nintendo Switch ROMs, you will typically encounter two primary formats. NSP (Nintendo Submission Package) is the format used for digital titles and updates downloaded from the eShop. XCI (NX Card Image) files are direct dumps from physical cartridges.
For most modern emulators, both formats are fully supported. However, XCIs often contain all the necessary update data within a single file, while NSPs may require separate installation of patches and DLC. Our repository ensures that both formats are verified for header integrity, preventing the common "NCA signature verification failed" error.