iOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2018-05-29T17:15:48Z. The update package is 761.55 MB. This is a delta (partial) update that requires 11.2.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 189f3ebdab5a09c152ce81a9c065d34fbe02ec51.zip.