iPadOS 9.0.1 (build 13A404) is an official Apple over-the-air update for the iPad 4 (GSM), released on 2015-09-23T17:55:18Z. The update package is 25.02 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: beac548ea5762d21e81b7eb3d36648aa714a1fcb.zip.