tvOS 13.4.5 (build 17L5533c) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2020-03-31T17:23:35Z. The update package is 118.93 MB. This is a delta (partial) update that requires 13.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 324f2d027255899686d1247c70b6f074f7fff4dc.zip.