iOS 9.9.10.2.1 (build 14D5027) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-01-12T21:11:44Z. 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: 5d875962a63c8789bca1a551cc6dc124b0ef8a7b.zip.