iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2018-10-30T17:15:38Z. The update package is 488.74 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: bc922add45f88c160c9c7e844a6566c9a287359d.zip.