How to unlock BMW CAS3 key with Launch X431 IMMO Plus or X431 IMMO Elite along with x-prog3 programmer? So the key can be reprogrammed to another car.
Go to BMW->Anti-theft key matching-CAS3/CAS3+ IMMO->Key operation-> Key Unlock
Put the key to be unlocked into the x-prog3 programmer.
Click OK to load a backup key data.
*First you should read the key data of the car, after that you can use the file to unlock the programmed key.
Select key data.
Communicating with the key.
Unlock key successfully.
Check key status. It is unlocked.
Now you can program this key into car.