iOS 12.1 (build 16B5068i) is an official Apple over-the-air update for the iPhone 8 Plus (Global), released on 2018-10-02T17:11:56Z. The update package is 578.69 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: b27cc59327ecd38839c683815f139e530f2ec98a.zip.