iOS 11.4.1 (build 15G5054c) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2018-05-30T17:05:21Z. The update package is 273.25 MB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7c2ef6970e95d6160d3c86ba76a87955a43fb403.zip.