iOS 11.4 (build 15F5049c) is an official Apple over-the-air update for the iPhone 8 Plus (Global), released on 2018-04-16T17:08:04Z. The update package is 286.76 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: 1f516846a08ab980d66da0c04302026107f3e56c.zip.