tvOS 13.0 (build 17J586) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-09-24T17:13:26Z. The update package is 1.07 GB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a304d059229de450621d60361cbdf4b7a5a9afd6.zip.