iOS 12.1.2 (build 16C101) is an official Apple over-the-air update for the iPhone SE, released on 2018-12-17T21:07:19Z. The update package is 1.32 GB. This is a delta (partial) update that requires 11.2.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 315dc0aab6763e786053fcb38b8d5fd0053b91cc.zip.