tvOS 12.0 (build 16J5355a) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2018-08-20T17:16:53Z. The update package is 42.08 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f3f0856b8f9296142a1f0ed7437b09437ac51604.zip.