Overview
- The December 21.1.0 firmware is live worldwide for both Switch 2 and the original Switch with identical patch notes.
- Nintendo’s official notes cite general system stability improvements.
- Nintendo Support confirmed the update resolves a Super Smash Bros. Ultimate video playback malfunction not listed in the notes.
- Users can trigger the update manually via HOME Menu → System Settings → System Update.
- Dataminers, including OatmealDome, are analyzing the release for undocumented changes.