iOS 9.9.11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone 6s+, released on 2017-11-09T18:11:02Z. The update package is 1.45 GB. This is a delta (partial) update that requires 9.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4cbb3bb59d5c44ca37de8cb45808cabbaa7e855c.zip.