iPadOS 9.0 (build 13A344) is an official Apple over-the-air update for the iPad 4 (Global), released on 2015-09-16T18:02:10Z. The update package is 959.29 MB. This is a delta (partial) update that requires 8.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 240febd1ac7f659b711cd759b56c4a8616887fc6.zip.