For now, the bundle is complete. If you have all files from v1.0.1 through v1.4.1 plus the Monster Hunter and 30th Anniversary packs, you are experiencing the definitive Switch version of Sonic Frontiers .
The chaos began when ‘DumpsterFire_Direct’ revealed himself. He wasn’t a hacker. He was a former SEGA middleware engineer who had worked on the Hedgehog Engine 2. The “Update” was a retrieval algorithm. He claimed that when Sonic Team ported Frontiers to the Switch, they didn't delete the original, unstable “Phantom Ruins” prototype. They just compressed it, layered the retail game on top, and shipped it. The 47MB NSP was a key to decompress the forbidden layer. Sonic Frontiers Switch NSP UPDATE DLC
Beyond the massive free updates, several DLC packs enhance the aesthetic and utility of the game. If you are looking for the complete "Sonic Frontiers Switch NSP UPDATE DLC" package, ensure these are included: For now, the bundle is complete