Before upgrading to S3.0, please read the Installation section of the S3.0 Release Notes.

IMPORTANT: 
The only supported installation methods (for both Content Server software and security updates) 
is through either the local box (e.g. USB keyboard and monitor locally connected) or through the 
Microsoft Remote Desktop Utility installed locally on a remote PC.  Other utilities, including
web-based Remote Desktop Utilities are not supported and should not be used under any circumstances.
During the installation the TCS must have Internet access to crl.verisign.com and Microsoft.com 
certificate revocation lists to validate the certificate on the signed TCS service applications.