tvOS 8.1 (build 12B410a) is an official Apple over-the-air update for the Apple TV 3 (2013), released on 2014-10-20T17:59:07Z. The update package is 555.44 MB. This is a delta (partial) update that requires 7.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a7ac415019e4331913f9de1860a7991b05b440eb.zip.