iOS 11.0.2 (build 15A421) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2017-10-03T17:03:57Z. The update package is 1.06 GB. This is a delta (partial) update that requires 10.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 69a2007d0ef70bb508d8826386e6303248bfa8ab.zip.