Download the latest Virtual COM Port (VCP) drivers from the FTDI Official Site . Use the "Windows (Desktop)" executable for the easiest installation.
If you installed the driver and the device worked for a moment, then disappeared forever, you may have fallen victim to the FTDI "clone killer" code (present in older driver versions). The chip may have had its Product ID (PID) changed to 0000 . vag kkl 409.1 driver windows 10 64 bit
: The "Budget" option. Common in the cheapest Chinese clones. These almost always require a manual driver installation and can be more finicky on 64-bit systems. 2. Driver Installation: Step-by-Step Download the latest Virtual COM Port (VCP) drivers
Windows 10 64-bit blocks drivers that are not digitally signed. Many KKL 409.1 drivers are unsigned or use test signatures. You have two options: The chip may have had its Product ID (PID) changed to 0000
If the diagnostic software cannot find the interface: