iOS 12.1 (build 16B5084a) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2018-10-15T17:03:17Z. The update package is 191.49 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c35b0f09222b08ee9b36ce2e4a882839ddf8da0c.zip.