Outdated or corrupted FTDI drivers prevent the computer from recognizing the VCI.
Windows must recognize the hardware on a dedicated, static COM port. Open on your PC. Expand the Ports (COM & LPT) section. Look for Delphi Diagnostics or USB Serial Port . Note the assigned port number (e.g., COM3).
: Outdated firmware can lead to response times exceeding 12 seconds per request. Limited Module Access delphi ds100e firmware update problem link
Identify your device (it may show up as Delphi VCI , Autocom , or USB Serial Port ). If it has a yellow exclamation mark, the driver is missing. Right-click the device and select .
Common error messages (examples)
Reopen the software, navigate back to , and click Update . This forces the software to push the correct, matching firmware files to the VCI chip. Best Practices to Avoid Future Update Failures
Once recognized, configure the software to communicate on the correct port: Outdated or corrupted FTDI drivers prevent the computer
Navigate to your Delphi installation folder (usually C:\Program Files (x86)\Delphi Diagnostics\Delphi Car\Drivers ).