iOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2018-05-29T17:15:43Z. The update package is 851.41 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9453d1614eaec62e0d30dff782e39210d4813911.zip.