iOS 9.3 (build 13E237) is an official Apple over-the-air update for the iPhone 5 (GSM), released on 2016-03-28T16:52:23Z. The update package is 997.78 MB. This is a delta (partial) update that requires 8.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d178ec41cfb2fc2a1c3da82f7577df7403eeb942.zip.