I just purchased the Amplifi Fx100 yesterday. And I was told to upgrade it, so I tried use my iPhone to update but then I got a update failed message. Then I restarted my fx100 and it's not responding, the four buttons ABCD kept flashing all the time, then I tried to fix the problem using my desktop. When I plug the USB into the computer, the Line6 adaper can't find the device. According the message from win10 it says: "usb composite device has a driver problem". Does anyone know how to fix it? Thank you.