iPadOS 9.1 (build 13B5130b) is an official Apple over-the-air update for the iPad 3 (WiFi), released on 2015-09-30T17:58:04Z. The update package is 161.09 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: 03cc5306153f697606f7acc2dc1330846f424dc4.zip.