iOS 12.1.2 (build 16C101) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2018-12-17T21:06:10Z. The update package is 76.84 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: cd38da74e25d5cfa80fbf956150a8c3e15b95d2c.zip.