iOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPhone X (Global), released on 2018-05-29T17:15:41Z. The update package is 828.01 MB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fc6e0582daa8288fcdbb03a8dc7e930c3513905d.zip.