iOS 12.1.2 (build 16C101) is an official Apple over-the-air update for the iPhone 6, released on 2018-12-17T21:06:52Z. The update package is 398.49 MB. This is a delta (partial) update that requires 12.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9bbba124393dde99c210576c4bcf671bc1dbfc4e.zip.