iOS 11.4.1 (build 15G5054c) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2018-05-30T17:05:04Z. The update package is 284.62 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: ad06a628f89c21d0738b4bfbb0912e4bcb1f97e7.zip.