iOS 12.1.2 (build 16C101) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2018-12-17T21:06:13Z. The update package is 520.99 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: b8efdcc0fa0741c0d45b2d44c13fe960fee27d16.zip.