iOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone SE, released on 2017-11-09T18:11:21Z. The update package is 1.13 GB. This is a delta (partial) update that requires 10.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 29d4ad15cc6f11f1432dc16f0fec32a54b581f08.zip.