iPadOS 8.4.1 (build 12H321) is an official Apple over-the-air update for the iPad Air (China), released on 2015-08-13T18:05:10Z. The update package is 424.28 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: a9dc6d651b6a1e080eb0c5302deab6a8ff5921b4.zip.