iOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone SE, released on 2017-11-09T18:11:27Z. The update package is 40.25 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: cc0d43a4fb3062aeae193f03237a102d55824207.zip.