supercard ds onei

i've been having problems with the usb key and firmware writer i was given. The usb key is write protected and i can't seem to remove it. and as for the firmware writer... i barely know how to use it lol
so if anyone out there has a supercard ds onei or knows how to fix any of the problems i've listed please help!
i obviously use a dsi, the latest update (then updated my dsi, thats when it stopped working)
i have windows vista if that helps

Not much point right now, it can't work.

thanks for the help?