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 235.61 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2c2db57819f2e3093c2ccb7597acab5b0f8b921f.zip.