iPadOS 9.0 (build 13A4280e) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2015-06-23T18:30:06Z. The update package is 348.35 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: cecf5ebd911894199cee775e65b2207c86ba8605.zip.