To day I did some logging and it worked fine, The i done a re flash on the fan settings and it worked fine ,But after i close out i reopened up the scan tool it wound not connect , on the black box only the OBD & USB lights were flashing. And would get a error code 31 could connect. I have Predator hand held and plug it in and it worked fine. This is the first time Ive had any problems with the V1 and Ive own it since 2003 . Ive tried every thing restart my laptop , unplug the usb cable and even tried it on my other laptop that i have for a backup and it does the same thing. Does the V1 has any kind of warranty ? I need to send it back to get it fix ASAP !!!!!!