tvOS 12.2.1 (build 16L250) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-04-10T17:06:52Z. The update package is 979.34 MB. This is a delta (partial) update that requires 10.2.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9c1bd3fef8d783e6671d5cddbf92bad07a19b30b.zip.