Navigation Volvo RTI HDD Europe

Hello, my Volvo V50 1.6D from model year 2010 is equipped with a fixed nav of the above type. The last update took place in 2011. This is of course quite outdated and screams for update. On the correct website you will be referred to the responsible dealer. I did this with catastrophic “success”: VOLVO offers me a map update on DVD from 2015 at the price of 300€. That’s quite outrageous! – If you’re complaining VOLVO also offers to install me a mobile device. However, this does not correspond to my opinion, there is a fixed device (but with the then stand as DVD device) available and in addition somewhere on the windscreen a mobile device is tapped. At that time the equipment detail “fixed built-in navigator” was quite expensive. My question to the community is the, maybe someone knows an alternative, where one can come at reasonable cost to a card update or maybe even a “remodelling solution” to the today’s usual USB standard. I would be happy about relevant hints and thank you for thinking! Greetings focus2122