(FTDI or CH340, depending on your cable’s chip):
Once the drivers are installed, the cable will be assigned a COM port number. This port number must be within a specific range for legacy diagnostic software to function correctly. how to install vag kkl 4091 on windows 10
Hardware is useless without proper software. (FTDI or CH340, depending on your cable’s chip):
– open a terminal program (e.g., VCDS Lite → Options → Test) or use a simple serial terminal to verify communication. (FTDI or CH340
The first hurdle is often the driver for the USB-to-Serial converter chip, typically an FTDI chip, inside the cable.