iPadOS 9.0 (build 13A344) is an official Apple over-the-air update for the iPad mini (WiFi), released on 2015-09-16T18:02:08Z. The update package is 877.2 MB. This is a delta (partial) update that requires 8.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 51ec5cb9448d07fc9871cafa6e7d1fbf986c2a8d.zip.