iOS 9.9.10.0.1 (build 14A403) is an official Apple over-the-air update for the iPhone 6s, released on 2016-09-13T16:56:22Z. The update package is 1.08 GB. This is a delta (partial) update that requires 9.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a39bf61499796823505db6f8385cee2796f4f3dd.zip.