iPadOS 9.0 (build 13A344) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2015-09-16T18:02:10Z. The update package is 24.95 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: 035c77721e763ad9f9c41f147c244909f8ff1252.zip.