Dyanvin N6 NAV issues

[twinspool]

Wasup boys.. I recently acquired a new to me, 4.8is that was equipped with the aforementioned. And although it is a neat addition there are some issues with it and I was hoping I could get some guidance in here as I couldn't source anything in the Dynavin manual online and here (could be my search word choices)

When I press the button for the NAV, it starts to run and then BAM! an error pop up msg appears in another language and I am not sure what the issue could be.

Has anyone else experienced this and if so, what did you do to rectify it?

I did notice a mini SD card in the NAV slot, which I removed and reinserted probably just to excercise my fingers but that didnt help.

Thanks in advance!