iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone 8 Plus (Global), released on 2018-10-30T17:15:47Z. The update package is 492.37 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: f0644fd8535b8d1588dbcbc8ca4419c6f7ba673e.zip.