tvOS 12.0.1 (build 16J380) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2018-09-24T17:13:25Z. The update package is 1.02 GB. This is a delta (partial) update that requires 10.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a3faf28b140720e997bc615a749881c58d433590.zip.