Ensure your USB interface is unplugged from the computer before you start the installation.
Follow the prompts to finish the installation. The installer will automatically place the necessary driver files in the C:\Ross-Tech\VCDS directory. Manual Driver Installation and Troubleshooting Ross Tech Usb Driver 03.02.07 Download
Right-click the device, select "Update Driver," and then choose "Browse my computer for driver software" . Ensure your USB interface is unplugged from the