iOS 9.3 (build 13E237) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2016-03-28T16:52:51Z. The update package is 358.87 MB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ea3e91c884df74bd050608d3393ff4b91dc72286.zip.