Updating Maps in CARCHET Car 7 Touch Screen GPS Navigation MTK

[mdmm55]

Updating north american Maps in Car GPS CARCHET " Car 7" Touch Screen GPS Navigation MTK 128MB".. IGO Primo
I logged in on following websites
naviextras com/shop/portal
igonavigation com
I have logged in and installed "" naviextras Toolbox".Then I connected wires of CARCHET gps with my computer.It said not connected. I
tried to connect to update maps on this website but failed. Probably I am not a computer expert,so I failed .Although my coputer opens everything inside GPS but naviextras says not connected.
Kindly help me steps to connect and update maps.Is there any " PIN" or Code to enter ?

 

[George Henderson]

I have the exact same problem ,NO MAPS ON MY DEVICE..... SAME DEVICE BEGGING SOMEONE PLEASE HELP THANKS GEORGE