iOS 11.1 (build 15B5086a) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2017-10-16T17:04:13Z. The update package is 146.97 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: 7dffc93073fb6bf26d96834985f8e53fa191d060.zip.