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 235.67 MB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: feda4c9d8ab2701a5f35b88219f3b5e3c1e66d5c.zip.