tvOS 12.2 (build 16L226) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-03-25T19:15:17Z. The update package is 985.31 MB. This is a delta (partial) update that requires 10.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: aaae1ad47a8d111e43eea7361577f0147477b71c.zip.