iPadOS 9.0 (build 13A4325c) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2015-08-06T18:44:16Z. The update package is 468.27 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: fcf63492fd37a4177e6cf5341f7f3d7ac0acd5e8.zip.