iPadOS 9.1 (build 13B143) is an official Apple over-the-air update for the iPad mini (GSM), released on 2015-10-21T17:15:49Z. The update package is 883.21 MB. This is a delta (partial) update that requires 8.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 77c4d35524c1e9e054366c241fe9c515ecb19edd.zip.