tvOS 12.0 (build 16J5313d) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2018-07-03T17:09:08Z. The update package is 601.17 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: 4334107b6a4844290b77826d9b14b3040b8312a6.zip.