Solution To CGDI BMW CAS3+ AKL Programming Downgrade Failure?

I lost all my BMW CAS3 keys and tried to use CGDI PROG BMW basic version to generate a dealer key, but the software didn't recognize the keys. I also attempted to downgrade the CAS system, but failed multiple times. Do I need additional authorizations for this?

CGDIPROG.COM engineer replied:

In general, you do not need additional licenses. You can try matching the key directly via OBD.

However, if the downgrade process fails, you may need to use another programmer to read out the CAS IMMO data and send it to CG technician for modification.

Tips and guides to successfully program BMW CAS3+ AKL (All Key Lost):

• Step 1: Read DME ISN
• Step 2: Read CAS3+ Key Info after downgrade
• Step 3: Program the key
• Step 4: Test if the key works or not