iOS 9.9.11.1 (build 15B5078e) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-10-09T17:02:21Z. The update package is 1.78 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: 361cf9d893572587cb6c3f918905eb46954a7c14.zip.