iOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPhone 5c (Global), released on 2016-03-31T16:54:57Z. The update package is 1002.9 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: 49b8d36d43dde79dffed2a3101a6ac8994379480.zip.