iPadOS 9.0.1 (build 13A404) is an official Apple over-the-air update for the iPad Air (China), released on 2015-09-23T17:55:19Z. The update package is 1.17 GB. This is a delta (partial) update that requires 8.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c931d4cb3b3cd88ee25e01b5c99bb298fecd9299.zip.