try this:
If a Tuner was plugged in before the software was installed it may be necessary to install the drivers manually. A sign of this is if you see Errors coming up when trying to use the functions of the X3/Livewire Updater. “Failed to Write Data” "Connect Livewire" or others.
To Check this out, have the tuner plugged in.
Click on Start/
Then Right Click on My Computer/
Then Hit Properties/
When the System Properties Window Opens Up Click on the Hardware Tab/
Then Click on the Device Manager Button.
Within the Device Manager list, we are looking for an item with a Yellow Exclamation Mark. It may say LIVEWIRE, UPGRADE LOADER, UNKNOWN DEVICE or others.
Right click on the item that has the Yellow Mark on it, and then click on Update Driver.
This will open the FOUND NEW HARDWARE WIZARD. Let it search automatically and install the drivers.
NOTE: This will only work if the software has been installed.