iOS 12.1.2 (build 16C101) is an official Apple over-the-air update for the iPhone 6+, released on 2018-12-17T21:06:41Z. The update package is 1.83 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f6eaf5e37256fd8829032659bc023de339a3bd2b.zip.