iPadOS 9.1 (build 13B143) is an official Apple over-the-air update for the iPad mini (WiFi), released on 2015-10-21T17:15:49Z. The update package is 187.58 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: e62be876339b994037618a78bcbc6a7dd8426b22.zip.