iOS 9.9.10.0 (build 14A5309d) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2016-07-18T16:47:41Z. The update package is 1.57 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: 6163500f5f46b4d59d994ba02827f1a66f5ff380.zip.