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Complete 3.0 Install Guide

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Hey I need help... I got the f700bt.. I had the 2.00000 software installed.. I updated to the 4.000000. But I didn't back up my unit now I have no maps it just shows base map in the list before the update there was a lot.I tried to add diffrent kind of maps back but no luck CAN U PLEASE HELP ON WHAT I AM DOING WRONG..

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