tvOS 12.2 (build 16L5221a) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-03-11T17:15:41Z. The update package is 305.4 MB. This is a delta (partial) update that requires 12.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 47d0998209ff81af8b601b66b5f0c693cc217bfd.zip.