iOS 12.1.2 (build 16D5024a) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2018-12-10T18:09:04Z. The update package is 361.18 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: 100feff7d1e623d82d99973675a616643e2183d0.zip.