iPadOS 9.0 (build 13A4305g) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2015-07-21T19:26:06Z. The update package is 282.7 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: 4ca5c4241003407877817ccc0f8a8109b7fabe9e.zip.