iOS 11.3 (build 15E5201e) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2018-03-05T18:13:59Z. The update package is 364.13 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: 9840b2482677095d208c69ad0a7a6d8c2213ff9f.zip.