iOS 11.4.1 (build 15G5054c) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2018-05-30T17:05:22Z. The update package is 273.57 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: 74c2fd8c8a8491dd46ef5e5bf1fa6e00db865dcd.zip.