tvOS 8.0 (build 12A4318c) is an official Apple over-the-air update for the Apple TV 3 (2013), released on 2014-07-07T17:52:02Z. The update package is 171.3 MB. This is a delta (partial) update that requires 8.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: acbc9fc3d6f1d7872555dbd958304f353f83748e.zip.