iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2018-10-30T17:16:04Z. The update package is 496.87 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2b59a8f44997f33473a32fbbc25b79206f54657c.zip.