Website Upgrade Procedure:
Reset your existing SourceBans website theme to the default theme using your website's admin controls
Make backup copies of your existing SourceBans Web Folder and SourceBans MySQL Database
Rename your existing SourceBans web folder to a different name (eg: sourcebans_backup)
Create a new Sourcebans web folder using the same name as the old one.
Upload the contents of the supplied "web_upload" folder to the new web folder you just created
Set the file permissions on the folders per the SourceBans Install Manual (http://www.sourcebans.net/manual/)
Copy over your existing web /config.php file and web /Demos folder to your new web installation folder
Navigate to your new installation's "install" web folder and run the Installer (eg: http://yoursite/sourcebans/install)
Navigate to your new installation's "updater" web folder and execute the SourceBans updater (eg: http://yoursite/sourcebans/updater)
After the updater finishes, delete or rename the "updater" and "install" web folders on your new installation
Test our new site by going to it's home page

Game Server Upgrade Procedure:
Rename the sourcebans.cfg file in the supplied installation game_upload folder to sourcebans.bak so you don't overwrite your existing sourcebans.cfg file(s) when you upload the files to your game server(s)
Upload and overwrite the SourceBans related plugin files to your game server(s) using the ones supplied in the game_upload installation folder
Restart the server(s).
Review your server(s) SourceMod logs and confirm there are no SourceBans errors in the error log