iOS 9.3 (build 13E233) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2016-03-21T18:56:26Z. The update package is 1.04 GB. This is a delta (partial) update that requires 8.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 59780c2febc77f4d53e717f9eb675724c5263488.zip.