tvOS 13.0 (build 17J5557a) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-08-15T17:15:12Z. The update package is 1.6 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: 8cf25d72975ddb1c53d5094aae9bb78bb9935055.zip.