Emulators (like Ryujinx) require updated "prod.keys" to decrypt the latest update files.

NSP stands for "Nintendo Submission Package," which is a format used by Nintendo to distribute digital content, including games and DLC, on the Nintendo Switch console. NSP files are essentially containers that hold the game's data, including the executable code, assets, and metadata.

Released in six separate waves over two years. Official Ways to Access the DLC