iOS 8.1 (build 12B411) is an official Apple over-the-air update for the iPhone 6, released on 2014-10-20T17:59:09Z. The update package is 170.35 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: 3066f50c08349c5aa519369b7f31e4ce45a2bc3d.zip.