iOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2018-05-29T17:15:37Z. The update package is 803.62 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e7fa6bb7bb7025b7a98f377083e429662868817a.zip.