iOS 10.2.1 (build 14D23) is an official Apple over-the-air update for the iPhone SE, released on 2017-01-09T17:55:57Z. The update package is 59.01 MB. This is a delta (partial) update that requires 10.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8d632d36054245790ba06cb4da3aa6f1a316fce7.zip.