tvOS 8.4.4 (build 12H923) is an official Apple over-the-air update for the Apple TV 3 (2013), released on 2021-04-26T17:13:36Z. The update package is 16.75 MB. This is a delta (partial) update that requires 8.4.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 461b6df5fd76c3797ee4cb96014d0c9c1cc25afb.zip.