tvOS 8.0 (build 12A365b) is an official Apple over-the-air update for the Apple TV 3 (2013), released on 2014-09-17T17:54:04Z. The update package is 516.34 MB. This is a delta (partial) update that requires 7.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1147ae135d918cf0487a1a3ad6b595eddbb4d06e.zip.