iOS 9.9.10.1 (build 14B55c) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2016-09-21T16:58:45Z. 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: 51551d880bde98cee32ad206e07733d468ae0a82.zip.