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 1.62 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 803f918c00b25adc7da36ba49c20379bd4d0684b.zip.