I'm new user on 5.6.2.1. I want to upgrade to latest stable version of concrete5. I thought it would be simple (this is my first time doing this). I go to Dashboard > System & Settings > Update Concrete 5 and a window pops up stating I'm currently running 5.6.2.1. It states "No updates available". When I click the Check for Updates button, nothing changes. Isn't this supposed to be how people upgrade? I must be missing something obvious. Any hints really appreciated.