iOS 9.9.11.2.6 (build 15D100) is an official Apple over-the-air update for the iPhone 6s, released on 2018-02-19T21:14:19Z. The update package is 1.39 GB. This is a delta (partial) update that requires 9.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2a4a9373059414ab42bd324b9f21f42acb0f8e00.zip.