I recently bought a Medion Pda with Tomtom5 on it from Ebay & everything worked great. A friend of mine offered to put Tomtom 6 on it for me but now it doesnt pick up a gps signal. Its an external aerial(dome shape) & i do not know the settings to connect it.
I have a bluetooth GPS receiver that I use with my PDA Tomtom, but if I tell it to look for a bluetooth receiver, it doesn't find it, I have to say it's an "other cabled" receiver instead, then select the bluetooth port. Maybe you've got a similar problem? Just try every option you possibly can, even ones that seem silly and would never work - it was the last thing I tried on mine that worked, didn't think it would!