iOS 10.2.1 (build 14D27) is an official Apple over-the-air update for the iPhone 6+, released on 2017-01-23T18:08:28Z. The update package is 346.21 MB. This is a delta (partial) update that requires 10.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 98fd7edaab2156f704e1b6dfd2f6a1dafe9f0cdd.zip.