Yesterday started xbox 360 to this error message. Have tried to upload update via USB --thank you to all of the online forums for this info. but we can't get off the white screen with the error report. It won't read the USB. IDEAS? Suggestions? Is it possible that the USB ports are bad, they have never been used. We are using a Sandisk 32 GB formatted to FAT32 so that shouldn't be the issue. help! Thanks!