iOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone 6+, released on 2017-11-09T18:10:20Z. The update package is 241.94 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: 61727225b8db232db22e84f43135982771e78764.zip.