iPadOS 8.1.3 (build 12B466) is an official Apple over-the-air update for the iPad Air (China), released on 2015-01-27T17:55:04Z. The update package is 596.72 MB. This is a delta (partial) update that requires 8.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0b5d212b5b77b1d66a02d446da86e644e7aea648.zip.