iOS 10.3 (build 14E5260b) is an official Apple over-the-air update for the iPhone SE, released on 2017-02-27T17:57:14Z. The update package is 381.44 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: 20716bd8ab66b7ed108c1579331c042264a0f2aa.zip.