tvOS 13.3 (build 17K5449a) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-12-05T21:12:31Z. The update package is 38.37 MB. This is a delta (partial) update that requires 13.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 079ce44d5b7263260a1dce5f95d2fe26757f762a.zip.