Nicklas,
contact your supplier or technician you need help, each pen drive has an individual conection to the Audya via codeing, i think by using another you would have confused the issue somewhat, I think you need uninstall right back maybe to V3 then update, then upgrade or even format and so on, but the techs will guide you through it, don't rely on hearsay, even mine, get it from the direct source as you should