iOS 9.9.11.0.2 (build 15A421) is an official Apple over-the-air update for the iPhone 6s+, released on 2017-10-03T17:04:37Z. The update package is 1.38 GB. This is a delta (partial) update that requires 9.3.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8d6eae66f0f3e83ee6c87dffbd213ac89f77b98c.zip.