iPadOS 8.2 (build 12D508) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2015-03-09T18:49:04Z. The update package is 391.46 MB. This is a delta (partial) update that requires 8.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5fec8ba0d518136e8c81938b8a0213cc08ec8c46.zip.