iOS 11.3 (build 15E5216a) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2018-03-16T17:05:14Z. The update package is 66.52 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: 5988ad1dc39647a33757e3f806365df57631f578.zip.