iOS 9.9.11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone 6, released on 2017-11-09T18:10:32Z. The update package is 1.33 GB. This is a delta (partial) update that requires 9.3.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f5b4d28b9938a66e962f24cd5fc732fbf92c7817.zip.