Hi Timo and thank you for your reply
I have a Virus TI kb, when I start it (wiithout USB conexion), I saw the good version of it (2.7.3) but there are some unused rom patch (empty in lasted banks) and when I start Cubase with it, I can't see audio and midi drivers (in fact I can't use it with USB interface). when I try to re-install it, in the firmware update step, the bargraph indicates 77% (the Virus is in USB Update Mode) and it doesn't progress at all
help please...