iOS 10.2.1 (build 14D27) is an official Apple over-the-air update for the iPhone 6+, released on 2017-01-23T18:08:27Z. The update package is 371.06 MB. This is a delta (partial) update that requires 10.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4608c7d1e5b122150a14c9c3dd6a39424d92f905.zip.