For Everyones Info the lights on the tomtom mean the following:
*flashing blue - searching for T3
*solid blue - communicating with T3 via bluetooth
*no green (right light) - no sattelite coverage
*flashing green - communicating with sattelites
*red light indicates a low battery (and/or charging - have not fully worked out the sequence for this yet)

I have never managed to get the full screen working despite installing the patches, anyone got any suggestions on this one?!!