tvOS 11.0 (build 15J5374a) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2017-08-28T19:54:27Z. The update package is 1.14 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: 48c0def0942ce163f0659816f767b5aa0b916f9d.zip.