iOS 10.3 (build 14E5273a) is an official Apple over-the-air update for the iPhone 6+, released on 2017-03-13T17:02:02Z. The update package is 441.93 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: 048d8ad9ef99de4af7c51813099241dfdc3ee849.zip.