iPadOS 10.2.1 (build 14D27) is an official Apple over-the-air update for the iPad Air (China), released on 2017-01-23T18:07:26Z. The update package is 300.12 MB. This is a delta (partial) update that requires 10.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8ba989db10a5e3e6b9e6f5f6e6020e6ebba2753d.zip.