iOS 9.9.11.0 (build 15A372) is an official Apple over-the-air update for the iPhone 6+, released on 2017-09-12T19:09:50Z. The update package is 1.64 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: 5182adf6d162b56e2da9b32555f1702ec0bb85a3.zip.