iPadOS 9.0 (build 13A4325c) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2015-08-06T18:44:16Z. The update package is 445.25 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: eb4f08f08807953ba8aaa9768dfca74e9bf59d9f.zip.