Hi everyone, hope you can help me w/ this. I am stuck in the old 665 map version and I happened upon a download of 7 maps for TomToms. The instructions are to add maps to a sd card and put into your tomtom, but I have the 910 w/ the built in hard drive, so how would I install these new maps? Their versions are 725, so definetly new than mine. Any help would be appreciated. I have TomTom home version 2.3, and 7.163 for firmware. Thanks!