Scirocco Central

I'm looking to update the firmware on my rcd510.
How do I find out what version it currently is?
How do I do the update?
What improvements does the update bring?

Thanks in advance!!!

There is no firmware upgrade for the RCD510 unlike the RNS 510. You can upgrade the firmware of the MDI if required. All the info is on the attached website http://www.my-gti.com/category/in-car-entertainment/mdi" onclick="window.open(this.href);return false;