iOS 10.3 (build 14E5269a) is an official Apple over-the-air update for the iPhone SE, released on 2017-03-08T17:59:55Z. The update package is 402.34 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: 84384bf7f106ba9d3552dbfd394c70e30e78beea.zip.