tvOS 12.0 (build 16J5322d) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2018-07-17T17:19:42Z. The update package is 637.88 MB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0c8fba81722c396c1e67e2e807ea863fbcdb0144.zip.