iOS 11.4.1 (build 15G5063b) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2018-06-11T17:21:53Z. The update package is 280.92 MB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2114acae9449d4a0384836544abef8dae43a5859.zip.