iPadOS 9.1 (build 13B143) is an official Apple over-the-air update for the iPad 3 (GSM), released on 2015-10-21T17:15:52Z. The update package is 20.22 MB. This is a delta (partial) update that requires 9.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: db0f35606eeff21aefb8ef3a80be7109fdc3e193.zip.