There is no legal way to get the patch without registering the software at Profantasy's site. The Cartographers Guild does not allow its members to ask for or answer requests on how to obtain software illegally. If you bought it from your friend, the serial number is probably registered already in his name. If you and your friend contact Profantasy customer support, they are usually very good about transferring ownership of the CC3 software license and serial number from the original owner's email address (your friend) associated with the account and serial number to the email address of the new owner (you).