iOS 12.1.2 (build 16D5024a) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2018-12-10T18:09:05Z. The update package is 361.21 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: d3f59c2e23913148aa8cec1db70b5f1bc81ddafe.zip.