tvOS 9.2.1 (build 13Y772) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2016-05-03T17:03:41Z. The update package is 25.31 MB. This is a delta (partial) update that requires 9.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 40089d98dbd161de72b8a2230ac69bd73729cd49.zip.