iOS 9.9.10.3 (build 14E277) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2017-03-27T16:58:00Z. The update package is 1.48 GB. This is a delta (partial) update that requires 8.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 84c37e101406f56eb3338fb3d3337639eab997d1.zip.