iPadOS 9.0.1 (build 13A404) is an official Apple over-the-air update for the iPad mini (WiFi), released on 2015-09-23T17:55:15Z. The update package is 877.72 MB. This is a delta (partial) update that requires 8.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b6b73232c0d722841504d29cf20400c67bfffc53.zip.