iOS 9.9.10.2.1 (build 14D27) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2017-01-23T18:08:20Z. The update package is 1.09 GB. This is a delta (partial) update that requires 9.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fba0563dc70d2957b4ac8c9581315f4abe879621.zip.