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 555.5 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: 611a25d77d6a5ef2416e0af007feadc88a3d6927.zip.