iOS 10.2.1 (build 14D27) is an official Apple over-the-air update for the iPhone 6s+, released on 2017-01-23T18:08:40Z. The update package is 68.9 MB. This is a delta (partial) update that requires 10.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 44cc212fe6f301b216a6bf02de2f19e89f3cccad.zip.