Hi, this is the site for older versions: http://kb2.adobe.com/cps/142/tn_14266.html
I would suggest if you can to Download and SAVE the Installer version to your Desktop.
Be sure to use the Uninstaller to remove the 10.1 first. You can download it and SAVE it to your Desktop.
I'd review the Uninstall instructions to make sure you have a clean Uninstall.
After you have those on your Desktop and following the instructions for Uninstall, then Close all browsers. Uninstall, then reboot and follow that with the Install and then reboot.