iOS 10.3 (build 14E5273a) is an official Apple over-the-air update for the iPhone 6, released on 2017-03-13T17:02:05Z. The update package is 416.61 MB. This is a delta (partial) update that requires 10.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2f1e0f0cc865e8b030c3e7a272b5a7e9e7e28aa0.zip.