iOS 11.4.1 (build 15G77) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2018-07-09T17:10:57Z. The update package is 800.41 MB. This is a delta (partial) update that requires 11.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e96fbaff7322eb297439eb772c44707712ad07c3.zip.