iOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPhone 6, released on 2017-10-23T17:07:23Z. The update package is 1.1 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 56ca2c27303031aed70cc51a30a7b351a4c4b0ae.zip.