iOS 11.4.1 (build 15G5063b) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2018-06-11T17:21:54Z. The update package is 281.27 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: ec000f5ec3e0ca9121a8038e2b9c9bf8d3c4cfde.zip.