iOS 12.1.2 (build 16C101) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2018-12-17T21:06:12Z. The update package is 1.54 GB. This is a delta (partial) update that requires 11.2.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: cd4e405b17bd250bfcf90429631a735cab87c684.zip.