iOS 9.9.11.0 (build 15A5372a) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-09-06T16:51:06Z. The update package is 1.7 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 71995ad3578d1c8e2d5ee5311ee6aab76d285697.zip.