iOS 10.2.1 (build 14D27) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2017-01-23T18:08:22Z. The update package is 333.94 MB. This is a delta (partial) update that requires 10.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1656b7e49934190792d4c26c52e19f7fb206f1b7.zip.