yes
essentially, you need to boot into recovery console mode... that is the easiest to do the update, its a good idea to download it to your core somewhere convenient before the reboot. then run the update, the steps are fairly straight forward, but tell it not to reconfigure the xorg.conf file for you automatically... av wizard does this anyway. just make sure the xorg.conf/xorg.conf.pluto.avwizardr have nvidia not nv or vesa as the driver and the right PCI ID is set