tvOS 12.4.1 (build 16M600) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-08-26T17:18:32Z. The update package is 774.99 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: 85bb02787be2d2f35925b74d3bcc2432ef7f3fae.zip.