iPadOS 9.1 (build 13B5130b) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2015-09-30T17:58:08Z. The update package is 207.4 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: 597acb5fd7b649f5c37ea679fc0a6757f3bb27e1.zip.