iOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPhone 5c (Global), released on 2016-03-31T16:55:00Z. The update package is 226.31 MB. This is a delta (partial) update that requires 9.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fdd82bb4cbe79bc4f3e14a0b91a41f8833a17d4f.zip.