I was previously using HEX-CAN f/w 1.92 and VCDS 11.xx (don't remember previous version number). Used this to pull the codes and clear the codes in a 2011 mini. Completed the repair, a HPFP, and went to clear the codes. Foolishly I upgraded to the latest versions of both VCDS and HEX-CAN f/w before clearing the codes. Now the interface won't connect to the car. Any suggestions how to get these current versions working or how to revert the versions to the last working versions?