iOS 11.2.2 (build 15C202) is an official Apple over-the-air update for the iPhone SE, released on 2018-01-08T18:18:57Z. The update package is 319.21 MB. This is a delta (partial) update that requires 11.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 85a229fbb3497446104ccc0e30669b2a8cfa2788.zip.