iOS 12.1 (build 16B5089b) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2018-10-22T17:02:13Z. The update package is 165.86 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: fcd12dec70e02329b131d6168dfafe93a7874cb9.zip.