iOS 11.1 (build 15B5078e) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2017-10-09T17:02:15Z. The update package is 166.21 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1fbf3d3d2847db28f46ad49f3abdfffd30ce3230.zip.