tvOS 12.1.2 (build 16K534) is an official Apple over-the-air update for the Apple TV 4K, released on 2019-01-22T18:14:14Z. The update package is 1.56 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2d64d0e731916eba3b035473085e22796ea89694.zip.