Ssangyong Korando map update

Scanny Registered Users Posts: 2
New Seeker
Hi All
I have just purchased a 2016 Korando that has not had a map update since new. I purchased a new 5yr licence and the tomtom technician updated the 64gb SD card that was in the car. The technician also downloaded the instructions from Ssangyongs tomtom help page for me to follow. On trying to reinstall it at the point where it should start uploading it comes up with an error saying No upgrade file check USB (SD) connection state. I also uploaded the new map to a 32gb card but the same error comes which makes me think it might be the sat nav system at fault rather than the cards.

Would welcome any advice or suggestions.