iOS 9.9.11.1 (build 15B93) is an official Apple over-the-air update for the iPhone 6, released on 2017-10-23T17:07:16Z. The update package is 1.57 GB. This is a delta (partial) update that requires 8.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5deb941277430a24909e82d0afbc2d04eed96a26.zip.