iOS 9.9.10.3.1 (build 14E6304) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-04-03T16:59:31Z. The update package is 1.63 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: c0d7dee2e89e7fad07606e0c7f618246d733c2a7.zip.