iOS 9.9.11.3 (build 15E5216a) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-03-16T17:05:18Z. 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: c87628b035b61b80621eeea94f29bf72fa65a83f.zip.