iPadOS 9.2 (build 13C75) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2015-12-08T18:03:57Z. The update package is 1.15 GB. This is a delta (partial) update that requires 8.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 239307041d44314e7c101c304df636d709459816.zip.