iPadOS 9.0 (build 13A344) is an official Apple over-the-air update for the iPad 2 (Mid 2012), released on 2015-09-16T18:02:07Z. The update package is 740.54 MB. This is a delta (partial) update that requires 8.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: aaf2c1ef868cfcd57e42f76851229229389c46dd.zip.