The first thing I would do is to factory reset the r510 by sticking a pin in the reset button for 10 seconds until the light goes red. Then plug it into your unleashed network and try and upgrade.
Failing that, you able to look at the access point directly if you have a power injector or ruckus power supply. If using an injector you don't want it plugged into your network as you want the r510 to not get a DHCP address but instead sit on the default of 192.168.0.1
You then set your computer to 192.168.0.3, def gateway 192.168.0.1, sub mask 255.255.255.0
From your computer, you can then type in 192.168.0.1 into a web browser to communicate with the access point directly. Here you can manually update the firmware to 200.8.10.3.243
Hope this helps.