: Expert users sometimes attempt to reflash the interface's EEPROM with a known good serial number (like RT000001 ), though this is difficult and often unsuccessful once the software has flagged the hardware.
Open the VCI Config utility within VCDS and try to force a firmware update while connected to a car to reset the license state. vcds revoked fix
If your interface lights are flashing red or it is not found during a lead test, you may need to force a firmware reset. : Expert users sometimes attempt to reflash the