iOS 9.9.11.1 (build 15B93) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2017-10-23T17:06:42Z. The update package is 1.29 GB. This is a delta (partial) update that requires 9.3.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 39310d7dfa607cd1e3bc5c5dd149f0b282952f62.zip.