tvOS 13.4.5 (build 17L562) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2020-05-20T17:07:45Z. The update package is 875.47 MB. This is a delta (partial) update that requires 12.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0300e7f01b547f877482b55803b591fbc7433326.zip.