iOS 12.1 (build 16B5068i) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2018-10-02T17:11:57Z. The update package is 562.8 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: 2f6d5895d87edfb5961d685053fe6f9fa7c85d07.zip.