iPadOS 9.0.1 (build 13A404) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2015-09-23T17:55:21Z. The update package is 35.05 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: 68029818e4814c1548351b81423638c42280a968.zip.