tvOS 12.2.1 (build 16L250) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-04-10T17:06:50Z. The update package is 1.07 GB. This is a delta (partial) update that requires 9.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 461fdca814e83b011852253616d53c2771cbebcb.zip.