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 264.89 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2e243f9bdd7735d74f575661abac649bef388120.zip.