MY UNIT WAS WORKING BUT HAD FICM REPLACED AND NOW IT WONT TAKE TUNE BACK WHERE CAN I GET A CABLE TO DOWNLOAD NEW VERSION

well my deal is i'm getting the same contact dealer stuff VXCF9H7. anyway i had this unit installed in my truck but put my original tune back in to get my truck serviced at the dealership now it wont take the tune any suggestions really want my get up and go back