iOS 10.2.1 (build 14D27) is an official Apple over-the-air update for the iPhone 6, released on 2017-01-23T18:08:33Z. The update package is 67.99 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: 7917e4478c106365c48349777a859ecadaa46d07.zip.