iOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2018-03-29T17:13:18Z. The update package is 842.24 MB. This is a delta (partial) update that requires 11.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9fc3376dafca35ff036b7911b6f270b2f8a4f077.zip.