Pioneer avic-n2 regionfree

i live in europe and bought a car nav/multimedia player named pioneer avic-n2 from ebay usa,and when im now trying to use the nav here in europe it doesnt work because its locked to region1 usa…

my question is

does any one know how to make this car stereo region free.

i have the code to get in to the service manual in the unit but cant change the regional settings on it.have also tryed to copy the region 1 serials on the original disc and put it on a european map but nothing…it declines the disc.
im realy furious now,it cost me nearly 400us and i cant use it…pleace heelp
-it uses navgate as its nav program