Aussie,
If you do not have a Windows bootable controller then I would advise you NOT to update the driver to 5.2, since 5.2 change some of the functions and the current old firmware that your board has is not going to understand. It might or might not give you a problem, most likely it will. I really encourage you to keep your old driver then.
In the next couple of months (maybe October) NI-Motion 6.0 will be released and will allow remote configuration for RT-only controller configuration. But at this point keep your old driver then.
Good luck!
Nestor.
Nestor