iOS 12.1.2 (build 16D5024a) is an official Apple over-the-air update for the iPhone SE, released on 2018-12-10T18:09:12Z. The update package is 257.4 MB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4d1d301e828b0ff2bd08797ccf1fd86cb4cc52c0.zip.