iOS 10.3 (build 14E5273a) is an official Apple over-the-air update for the iPhone SE, released on 2017-03-13T17:02:13Z. The update package is 406.68 MB. This is a delta (partial) update that requires 10.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9098939269ed8c7350170f48c517f25b62cb18fc.zip.