iPadOS 9.0 (build 13A344) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2015-09-16T18:02:09Z. The update package is 945.8 MB. This is a delta (partial) update that requires 8.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ba83051dc9c049120606be715d9e21c95ad040c1.zip.