iOS 11.0.3 (build 15A432) is an official Apple over-the-air update for the iPhone 6, released on 2017-10-11T17:07:42Z. The update package is 264.17 MB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 48e53dd703f288759a66942facea8e8b82f1dfe1.zip.