iPadOS 9.0 (build 13A4293g) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2015-07-08T18:38:05Z. The update package is 361.22 MB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7376cb690560cbc3a5cc7a442d27c2ff93717461.zip.