my solution, for everyone with a similar problem:

i used the driver from the cd (included in the cable-package).
after downloading and reinstalling the newest usb to serial (vcp) driver from ftdi:

http://www.ftdichip.com/Drivers/VCP.htm

everything is working fine.

thanks for the program yani!

Hi there, I would like to connect to ESP. My car is a Fiat Stilo 1.9 JTD build 2002. First I tried to solder Pin 7 to 9, but I didn't get any ECU response. Next I bought a DIL switch an did exactly as jernejL and oem posted (thanks to you for the images, I have the same type of cable). Now i can con...