Answer: Yes. it’s easy. about how to add a new key, there are some on youtube.
Here is suggestion from the experienced users.
Pretty easy, takes around 10 minutes after downgrading cas
All obd with vvdi2
Strongly suggest You take out cas & do this on table. Read out eeprom and make key with eeprom data …
Curtis C J Perry:
I’d do this bench. It’s so much safer (downgrading can corrupt flash data) and you have the benefit of having the Immo data for new keys in the future. Creating a backup of EEPROM and Flash is crucial IMO
Yes, take out cas and read eeprom with vvdi prog. You can get Isn from working key, then do file make key with the Isn and your done
No downgrade needed!