We have not found the Upgrade Packages in the download page.
In the Download page we have found SugarPro-Upgrade-6.4.x-to-6.5.16.zip but it was not working. While click on the URL it will redirected and displaying "File was not found. Please reload the page and try downloading again. ".
Please let me know how to upgrade the SugarCRM Pro from 6.4 to 7.8.