Give this a try:
Connect your device or sd card which contains the Navigation software to the pc.
First make a full backup of the Folder containing the Primo software.
Then open the folder containing the Navigation software on your device and look for a folder named SAVE
Rename this folder to i.e SAVE_old
Disconnect from PC
Restart device.
Now you have to make the settings again.
Normally you can now select your preferred settings like language, voice and units. (If available in the software)
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