iOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone 6, released on 2017-11-09T18:10:38Z. The update package is 235.69 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: 198c48351f6b004e67ce7c10e86ba3be8ee20a48.zip.