iPadOS 9.2 (build 13C75) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2015-12-08T18:03:49Z. The update package is 988.2 MB. This is a delta (partial) update that requires 8.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3000d413d19c3d888c55ca7c7c648184955fd82b.zip.