iOS 11.4 (build 15F5079a) is an official Apple over-the-air update for the iPhone 7 Plus (Global), released on 2018-05-17T17:02:35Z. The update package is 45.32 MB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9f411cb2174e4d1b6e961d29c9ece019646d155d.zip.