iOS 9.9.11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone 6s+, released on 2017-11-09T18:11:01Z. The update package is 1.55 GB. This is a delta (partial) update that requires 9.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1d355b784f6ac16bcb25241a11ca8877a969d1a4.zip.