iPadOS 9.1 (build 13B143) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2015-10-21T17:15:56Z. The update package is 236.07 MB. This is a delta (partial) update that requires 9.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0e0a32a9f3c8b08f90145f92052a25be1cc772d4.zip.