Here comes guide on how o program a new spared key for BMW CAS3/CAS3+.Hope it helps!
Tools
A laptop
Procedures:
First connect VVDI2 with car and use the old key to turn ignition on. Open the software when I click Connect it automatically show me car information and “connect OK”.
Click Key Learn
Click Get Key Info and I see two options: one add key, one lost all key. I choose Add Key then NEXT.
And it says the dealer key should be taken away. So pull out the old key and I click OK.
It read out all key information. I click Save Key Info below to save the original key data.
Next I choose KeyID3 and click Prepare dealer key with programmer.
It asks me to put new key into programmer. So I put the new key into VVDI2 coil.
Then it asks if the key has keyless, I say no.
New key is made but locked. So as the tips I use the key to start car.
Yes. Car starts successfully as I expected!