I've been struggling with trying to upgrade our site to 5.6.0. I downloaded the install and then uncomressed it to the Updates folder. After which, I was able to select the update from the Update Concrete5 screen and run it. However, after I run it, my site is inoperable, and I get a blank screen. I can remove the line from Site.php that points to the update, and this restores it to working condition, but when I go to the Update screen again, it shows I'm on 5.6.0. However, if bring up the Environment Information, it shows 5.5.2.1, but if I look at the Config table in PHPMyadmin it says 5.6.0.