iPadOS 9.0 (build 13A344) is an official Apple over-the-air update for the iPad 3 (WiFi), released on 2015-09-16T18:02:09Z. The update package is 928.29 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: 50bb119209236c0988e1a141fc5566472e76617b.zip.