My drivers are ok, the ti89 software is installed. I managet to connecte it a few times before i did a ti89 firmware update...
I think the ti89 turned off while the install...
and i also tried to ru ...
When i connect the ti 89 to my Pc with the included usb cable, it telles me tha this device is unknown !
I updated the firmware oh my ti une day and then the ti shut down and i couldn't get the usb c ...