tvOS 12.0.1 (build 16J380) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2018-09-24T17:13:27Z. The update package is 655.35 MB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 158b3bbceff5b174282093fcc07b5614c4527dac.zip.