iOS 11.4 (build 15F5049c) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2018-04-16T17:08:26Z. The update package is 273.69 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: e35b151d4d108cf5ed706af8ec9076736b9137fb.zip.