iOS 10.3 (build 14E5269a) is an official Apple over-the-air update for the iPhone 6+, released on 2017-03-08T17:59:49Z. The update package is 437.48 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: f521d7131d4a072c762f827cb3fe8820d0744c18.zip.