iPadOS 9.1 (build 13B143) is an official Apple over-the-air update for the iPad mini (GSM), released on 2015-10-21T17:15:50Z. The update package is 188.05 MB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 746e509204c01dc12ffac1a33f7782dabcc38121.zip.