iOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone X (Global), released on 2017-11-09T18:09:04Z. The update package is 51.46 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ce22f09e1a844c541ffb6e6c6161720435d52803.zip.