I've been trying to upgrade magento 2 to v2.0.2 and have so far been unsuccessful. I've decided a try another approach. I was thinking about installing a fresh copy of v2.0.2 and then after it's up and running replacing my v2 install directory with the newly installed v2.0.2 files then changing the database info under app/etc/env.php to point to my v2 database. Is there anything else I need to change to get this to work?