iPadOS 9.1 (build 13B143) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2015-10-21T17:15:58Z. The update package is 30.17 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: 4f4876980a078637c8460f327e8e23db6df72bd1.zip.