I upgraded to wordpress 3.1.1 manually but it was showing error that upgrade not complete. So I did following:
Deactivated all the plugins
Deleted include and admin folder along with other file in root folder.
Never deleted content and temporary folder and files robots, htaccess, wp-config.php.
I am trying to upload the include and admin folders again for last 3 hours but fails to upload all the files.
I have downloaded again the 3.1.1 and tried but no good.
Website has crashes and I am helpless. Can you please guide.