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 1.09 GB. This is a delta (partial) update that requires 8.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0febc0b57d1b7745b54f48abcf9ad3fd8381c198.zip.