iOS 10.2.1 (build 14D23) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2017-01-09T17:55:58Z. The update package is 59.21 MB. This is a delta (partial) update that requires 10.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7235ebf85fb8b5493b114cfea590c7c574c35f35.zip.