Hi Guys,
I have fixed my issue. In case someone else come across this issue, the problem turned out to be the busted 4GB SanDisk micro SD card inside the TouchNav.
I noticed this card inside the device and decide to have a look and see if its readable at all. Installed it into my PC and found 20 files in the root folder and two subfolders BAK1 and BAK2
Then I tried to copy the content of the card andto my surprise one of the files 04V0002.DAT was not readable. There was same file in BAK1 and BAK2 folders so i simply copied the contend to a spare SD card i had and put 04V0002.DAT from the backup subfolder into the root directory. The system now works again.
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