iOS 9.3 (build 13E5231a) is an official Apple over-the-air update for the iPhone 5 (GSM), released on 2016-03-07T17:48:46Z. The update package is 26.01 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: aa9be27f366292b5635e73fd8ceed92ccb362c35.zip.