iOS 9.9.11.0.2 (build 15A421) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2017-10-03T17:03:53Z. The update package is 1.22 GB. This is a delta (partial) update that requires 9.3.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c56a186eecaef310a6563c79f84804a3a7b2ea1e.zip.