Step1: Please ensure that you have installed the VAG-COM software.
Step2: Plug your disabled cable to the USB. There maybe be a pop-up window to indicate you to install the driver, for damaged cable, let it be, skip it.
Step3: Right click "my computer", select " hardware", then "device manager", then "Other device", the " USB device".
Step4: Right click "USB device", select "properties", select " detail", there will be a line information displayed. VID_xxxx & PID_xxxx, please write down the 4 letters or number for VID and PID.
Step5: Unplug the cable, select"RT-USB.inf or VAGUSB.inf" in installation folder ex: "c:\ross-tech\vag-com\"
Step6: In item [RossTechHw], please add one more line as " %USB\VID_xxxx&PID_xxxx.DeviceDesc%=RT-USB,USB\VID_xxxx&PID_xxxx", please ensure the four number or alphabets are the same as the ones you write down in step 4.
Step7: In the end of the text, add one more line as " USB\VID_xxxx&PID_xxxx.DeviceDesc="VAG-COM Compatible USB Interface", the four numbers or alphabets are also the same as the ones you write down in step4.
Step8: Save "RT-USB.inf" file and then exit.
Step9: Unplug the cable, and then plug the cable to the USB port. System will indication found new hardware, and will pop up window for driver update. If do not have the pop up window, let it be, Right click "my computer", select " hardware", then "device manager", then "Other device", then right click "USB device", select update drive.
Step10: Let the driver point to installation folder ex: "c:\ross-tech\vag-com\"
Step11: System will search the drive for several seconds, then it will indicate that find the driver and then install it.
Step12: Open the software "vidpidfix.exe" i sent you. Click "search", there will be indication two lines of information. First " found one device", second "0".
Step13: Click "0", then click "open", the information will be displayed in he blank dialogue. Click "write default EE data", if success, there will be a pop up information " wirte successful". Then click "ok" and exit.
Step14: Unplug cable and then plug cable.
Step15: Just as the step 10, update the drive and let the file point to installation folder ex: "c:\ross-tech\vag-com\". There will be a indictaion information that it install completrly.
step16: Open the file" Mprog2.8_setup.exe". Click" device" and then"scan", if above steps are all well done, there will be information " find one device".
Step17: Use Mprog2.8.exe to open file " genius vag com ept.ept" . Then click "erase", if succeed, there will be a information " successful", and then click " program" , if succeed, there will be a informtion " Programmed Serial Number : Disabled "
Step18: Your computer can recognize the cable now and your cable is ready to use