iOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPhone 7 Plus (Global), released on 2018-03-29T17:13:26Z. The update package is 801.17 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4916c30f2cfda2f558c560583fe9b10400479838.zip.