iOS 11.3 (build 15E5189f) is an official Apple over-the-air update for the iPhone X (Global), released on 2018-02-20T18:06:23Z. The update package is 345.89 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: 822234006dab27504559119e3d7368f0797a35d3.zip.