iPadOS 11.0.2 (build 15A421) is an official Apple over-the-air update for the iPad Air (China), released on 2017-10-03T17:00:17Z. The update package is 1 GB. This is a delta (partial) update that requires 10.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 45e0721962e0d1c4dc1bddad28d28eaf68d4288e.zip.