Hello & Welcome to Just Answer,
Sorry I didn't see your question earlier and to hear of any issue you are having with your device.
To help you with this issue, may I ask:
1) What is the AGE of the device?
2) Do you have an SD card installed in the device (if so, what is the capacity)?
3) Did the install program (on the computer) give you ANY warning or error messages at all?
4) What maps ARE installed in the device right now (can you check the "Map Info" screen)?
I see it has been a few days and I just wanted to follow up to see if you have any more questions concerning this issue or if the issue was resolved?
I look forward to any further questions or results that you may have.
Thanks, ***** *****--. .-(im)