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 1.42 GB. This is a delta (partial) update that requires 9.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3256403e1f404488bc05f9c3b876038b457bbdb2.zip.