iOS 11.3 (build 15E5211a) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2018-03-12T17:05:50Z. The update package is 279.88 MB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4cbd9b8d79f51b1e71fe392c9676bf24fb9ab02e.zip.