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 806.52 MB. This is a delta (partial) update that requires 8.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c0f1bbbec2a035211d4b11bf432b4e32175292ba.zip.