iPadOS 8.2 (build 12D508) is an official Apple over-the-air update for the iPad Air (China), released on 2015-03-09T18:49:04Z. The update package is 731.46 MB. This is a delta (partial) update that requires 8.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9ce392a5c837e0f66e6ad77bf42ca3a9e288614a.zip.