Hi, i need help my car is a e93 , after doing combox retrofit every thing worked perfectly but my frm was not working how it should , window does not go down a bit when you open the door and rear windows couldnt be opened or closed when moving the top or with the keyfob, so i reverted all the vo’s to factory and coded the frm which made every thing go back to normal but now i cannot read frm data from ncs always says vin faulty Copai 2000 ,any help ??
(Note that i changed production date to 03/11 when retrofitting combox then put it back to stock 12/09)