iOS 9.3 (build 13E5200d) is an official Apple over-the-air update for the iPhone 5 (GSM), released on 2016-02-08T17:48:22Z. The update package is 81.8 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: 9a16e80f3d79aa0aeae63a1266e5b9a7e8b2855c.zip.