iOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2017-11-09T18:09:04Z. The update package is 308.47 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: 372ca1f22e5d8d3242f1c7946753064c4d318266.zip.