: It often includes the ability to update the interface firmware to match the requirements of newer VCDS software releases. Installation & Usage Summary

. The software should identify the interface and its status. once the test is successful. Vehicle Connection Plug the interface into the vehicle's OBD-II port. Turn the vehicle's ignition ON (engine does not need to be running).

Using these tools together requires specific steps to ensure the cable is recognized and functional:

Never update the cable firmware through the official VCDS prompt; always use the VIIPlus update tool provided with the loader.