hi its says its instailed however the yellow signs still there[/quote] The only thing i can suggest is that you google "usb to serial adapter driver" and try some different ones. This one is obviously not compatible with your adapter for some reason. You can not get anywhere until you have a compatible driver. The other option is to find a friend who has a PC or laptop with a 9pin serial port on it, There is no COM ports to set up and no drivers to install (it really is easy Lol), just simply load the firmware using just the Null modem cable eliminating the adapter. Because you have been struggling for so long now i advise you to go this route. Sorry we did not get there de4 but tried my best.