iPadOS 9.0 (build 13A344) is an official Apple over-the-air update for the iPad mini 2 (Cellular), released on 2015-09-16T18:02:11Z. The update package is 1.17 GB. This is a delta (partial) update that requires 8.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 80603e91b8293d00f38021581352a9bc09d2e780.zip.