iOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2017-10-23T17:06:08Z. The update package is 314.25 MB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 99e527ffdc2aaaaeacbed73b37dd5cb9d3ea8822.zip.