iOS 11.4.1 (build 15G5054c) is an official Apple over-the-air update for the iPhone 8 Plus (Global), released on 2018-05-30T17:05:04Z. The update package is 285.63 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: 78b18dd87f951e549260eb963bf1f0d6fad932ac.zip.