iOS 9.9.11.3 (build 15E5211a) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-03-12T17:05:44Z. The update package is 1.8 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: 16cee73e4d246deb10ca61e4a056b89f647f33a5.zip.