tvOS 12.3 (build 16M6153) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-05-13T17:19:10Z. The update package is 1.37 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: 2e137e39de7a3de4baf9e238079e08d0653fbc6c.zip.