Thanks. Or can I enable new key from dealer ? I have no kl15 (ignition).

The whole story.. my friend has an e90 with an aftermarket key which was key key 3. The key stop working and he ordered a key from the dealer which is key 3 also. So the dealer key is not working. So I deleted key 3 data hoping that the dealer key would work. I couldn't save the old key data because I have no ignition. I tried programming the CAS. I also tried saving the key data from another e90 to this vehicle just to move the car, but that didn't work. I ordered 2 blank keys. I'm hoping that I can setup the blank key as 2, so he can still use his dealer key. Any help would be appreciated. Thanks

When you program a new key on slot 3, it will overwrite the stored data stored by BMW (which is known by them when they want to make a key).
Ordering a new key from BMW, it will not work this way, no matter what you do.
We always recommend Autohex II users to add key on Slot 9 then 8,...
In this E90 if you don't have any working key, you must work with Autohex as a no working key case (Option 4)
If you need any help to complete this job when you get the blank key, contact support, they will work with you on teamviewer.
tech.support15@micro-tronik.com
Cheers