When dealing with Nintendo Switch backups and modifications, you will primarily encounter two file extensions: and XCI . Both serve different purposes depending on how you prefer to manage your library. 1. NSP (Nintendo Submission Package)

SEGA has been incredibly generous with post-launch support. The roadmap for Sonic Frontiers included three major content updates, all provided for free to players.

For those with an Atmosphere or SX OS modded Switch, here is a quick checklist to get Sonic Frontiers Switch NSP XCI DLC Update US working flawlessly.

Sonic Frontiers : Ultimate Guide to Nintendo Switch Updates and DLC (US)