iOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2017-10-23T17:08:20Z. The update package is 34 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: 74547382bf10395c631b55a4491682534d4a6623.zip.