The most reliable way to update your game and ensure DLC compatibility is through the official Nintendo eShop . : Highlight the Samurai Shodown icon on your Home Menu.
NSP stands for Nintendo Submission Package, which is a file format used for distributing and installing games and DLC on the Nintendo Switch. NSP files contain game data, updates, and additional content that can be installed on the console. samurai shodown switch nsp update dlc link
A: The base NSP is the full core game (approx. 9.4GB). The update NSP is a patch file that is installed after the base game to add new features, balance changes, and bug fixes. The latest updates are required to play all DLC characters, as they contain the data for them. The most reliable way to update your game