You can install it easy and manually by going to the simplemachines website and downloading the .zip file. Then all that needs to be done is to upload this through your file manager in cpanel to were you want it. Click on the name of it and in the top right of the screen you will see a new menu, click on extract files. Point your browser at the install.php and away you go. Hope that helps. WE can not upgrade fantastico, it's creators must do that.