iOS 9.9.11.1 (build 15B93) is an official Apple over-the-air update for the iPhone 6, released on 2017-10-23T17:07:18Z. The update package is 1.33 GB. This is a delta (partial) update that requires 9.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bb23448da7f30b433b88ccdcbff8591b3114fd87.zip.