tvOS 13.3 (build 17K5445a) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-11-20T18:11:10Z. The update package is 165.05 MB. This is a delta (partial) update that requires 13.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3d4384df0b15534163bafa42dff8f8f103ada702.zip.