iPadOS 9.0.1 (build 13A404) is an official Apple over-the-air update for the iPad 2 (WiFi), released on 2015-09-23T17:55:14Z. The update package is 815.91 MB. This is a delta (partial) update that requires 8.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 64fd691d82dc58fdee3ff2fb03f7a4de3c7f146c.zip.