tvOS 12.0 (build 16J364) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2018-09-12T19:15:36Z. The update package is 1.02 GB. 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: 43720882ef46c1d82da63e9dc402426cd95328b3.zip.