iOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPhone 7 Plus (Global), released on 2018-03-29T17:13:27Z. The update package is 740.92 MB. This is a delta (partial) update that requires 11.2.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e9b8223383ede92c39fcf12b6d62b9671fea2aa9.zip.