For trainers exploring unofficial downloads, NSP (Nintendo Submission Package) is the standard format for Nintendo Switch game files, including updates like version 1.3.0. These NSP files are often compressed using RAR (Roshal Archive) format to reduce file sizes and facilitate distribution across file-sharing platforms.
Some players prefer older versions, specifically v1.1.1 , because later updates patched popular exploits used for cloning items or skipping sections of the game. NSP & RAR File Safety
For players exploring the technical side of the Nintendo Switch, understanding the file format is essential. NSP (Nintendo Submission Package) is a digital distribution format used for Nintendo Switch games, updates, and DLC. These are essentially the digital versions of the software that are typically downloaded directly from the Nintendo eShop. The term "nspupdate" refers specifically to update files distributed in the NSP container format.