iOS 10.3.1 (build 14E304) is an official Apple over-the-air update for the iPhone 7 Plus (Global), released on 2017-04-03T17:00:40Z. The update package is 29.91 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: c387fec19d8dd54249861938e9a2c51f3ca01ccf.zip.