tvOS 8.4.4 (build 12H937) is an official Apple over-the-air update for the Apple TV 3 (2013), released on 2021-09-20T17:13:24Z. The update package is 15.68 MB. This is a delta (partial) update that requires 8.4.4 already installed. This update is currently signed by Apple, so it can be applied from Settings › General › Software Update.

Payload file: 93401d486ae46eb0a9027642a4e1178ed456f8f5.zip.