This person http://frogplate.blogspot.com/ suggests reformatting using your PC as follows: I decided to reformat the internal flash drive holding the SatNav software. I found that the following worked for me. But do not try this unless you know what you are doing and your Navman S30 is already bricked:

Plug the Navman S30 into an XP machine via USB. It will appear as two drives, in my case E: holding the SmartST SatNav software and F: being the S30's SD slot.

Use NavDesk 2008 to backup the user data in the usual way.

In Windows XP "My Computer" right click the drive holding the SmartST software (E: on my machine) and select "Format...". Select FAT for the file system and leave the volume label blank. Do not tick the "Quick Format" checkbox. Click on Start and cross your finger.

When the drive has been formatted go to NavDesk 2008 and run Tools - Reinstall software on your Navman.

Then ran Tools - Recover keys.

Put the Navman DVD in the drive, click on "My Maps" in NavDesk 2008 and reload the maps you need.

Check that the Navman S30 now boots up and works properly.

Finally use NavDesk 2008 to restore the backup of the user data. If it then fails to boot, the backed up data was corrupt and you will need to repeat the above steps but not restore the backup, losing your preferences, favourites etc.

The whole process took about 20 minutes.

All seems to be working fine now. Just need to remember to take a laptop,
installation DVD, USB cable and Internet connection every time I take the S30 out in the car...

Hi there,

Well first of all you can try to reset it, hold the power button down, in reset position for about ten seconds and then it should be ok. Please post comments if further you have the same problem............

Good Luck!!

Thanks