iOS 9.3 (build 13E5200d) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2016-02-08T17:48:28Z. The update package is 115.34 MB. This is a delta (partial) update that requires 9.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 37f1589bed855eca82b115f8562ecfc12bfea4e9.zip.