iOS 10.3 (build 14E5277a) is an official Apple over-the-air update for the iPhone 6+, released on 2017-03-16T16:56:33Z. The update package is 446.09 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: 07faf8fce8c32d7bec663eb6457ad6ac9f2e6621.zip.