iOS 11.4 (build 15F5037c) is an official Apple over-the-air update for the iPhone 8 Plus (Global), released on 2018-04-02T17:06:48Z. The update package is 326.53 MB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 09ce3d5f6e924fb81f7177c4c8fe3c9126bc4d30.zip.