tvOS 13.4.6 (build 17L570) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2020-06-01T17:09:24Z. The update package is 875.5 MB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f279bbc44135a72274fcbdd7b59048b5e79a2bed.zip.