iOS 11.0.2 (build 15A421) is an official Apple over-the-air update for the iPhone 6s, released on 2017-10-03T17:04:35Z. The update package is 1.08 GB. This is a delta (partial) update that requires 10.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4e32ce835798c26a8c906eb7990fc7cbc58edfb8.zip.