iOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2018-05-29T17:17:15Z. The update package is 746.13 MB. This is a delta (partial) update that requires 11.2.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d508d1573d85345628110ac8c8622622e7253756.zip.