tvOS 13.3 (build 17K5433c) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2019-11-05T18:20:47Z. The update package is 1.63 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: c758e34536b816a95bfc5c19c412995e4815403d.zip.