iOS 9.9.11.0.2 (build 15A421) is an official Apple over-the-air update for the iPhone 6s+, released on 2017-10-03T17:04:36Z. The update package is 1.48 GB. This is a delta (partial) update that requires 9.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3e43ac99c199db416a715782a99136c0d2030aea.zip.