So coded the unit properly today. No faults - except says no cd changer
Downgraded firmware with no issues. Now on 2660.
Comes on with no issues though rebooted randomly on my way home tonight, just once. Splash screen came on and then worked as normal.
This morning before my reinstall of the firmware i got red lines top and bottom and it woud continually restart. Then it worked. Loaded maps today as well which worked. Nav seems to work as well.
So should I upgrade firmware to 3XXX or does this sound like a hardware issue - mainboard???