iOS 11.3 (build 15E5211a) is an official Apple over-the-air update for the iPhone X (Global), released on 2018-03-12T17:05:41Z. The update package is 250.19 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: 2fdfdb511fd335f77397cd7274b572639f6ea484.zip.