iOS 9.9.10.2.1 (build 14D10) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2016-12-14T17:58:30Z. The update package is 1.59 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: 3d7a94f94c0082987d81b6212748c8d413fcc6dc.zip.