iPadOS 9.0 (build 13A5344) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2015-09-16T18:02:02Z. The update package is 1.21 GB. This is a delta (partial) update that requires null already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e1588df3e866328b1e632626e33dce03df130440.zip.