tvOS 13.4.8 (build 17M5558b) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2020-06-30T17:24:50Z. The update package is 99.79 MB. This is a delta (partial) update that requires 13.4.8 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3797664debc5713774e6bbf8bebcd749ed06a8d0.zip.