tvOS 12.4 (build 16M5537c) is an official Apple over-the-air update for the Apple TV 4K, released on 2019-05-28T17:11:47Z. The update package is 1.57 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6f60145ab2a7078b0e813936b2d840f22a3eedeb.zip.