If you are unable to download the data from your device, there are several things we can try:
If you have iTunes 184.108.40.206 installed, you will not be able to connect to your device. Please visit http://support.apple.com/downloads/#itunes
and download and install an older version of iTunes.
Try a different cable and a different USB port on your computer.
Make sure you have installed the iRecovery Stick Drivers Pack when you first run the iRecovery Stick.
If none of these things work, it may be necessary for you to create a backup of the device using iTunes, and then use the iRecovery Stick to recover the deleted data.