iOS 11.1.2 (build 15B202) is an official Apple over-the-air update for the iPhone SE, released on 2017-11-16T21:22:28Z. The update package is 235.16 MB. This is a delta (partial) update that requires 11.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 00170218d369db5622c2f5aa22c92d3db382d9dc.zip.