tvOS 12.4 (build 16M568) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-07-22T19:22:58Z. The update package is 984.35 MB. This is a delta (partial) update that requires 10.2.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b1886bcc726ff527f9a8c042ad4295c29fd06ffd.zip.