DId u ever fixed your USB? I have the exact same problem but now my usb and SD card both wont work. even windows can't format them. Not just wii but can't be used with windows either .
Format Required . WIndows cannot format this drive!
Ok. so i used WBFS Manager 3.0 to format my 1 GB USB Drive. As soon as i clicked format it said warning all files will be deleted I clicked yes and then it gave me an error make sure drive is not in use. Kingston (1GB)
I can gurantee it was not in use. And then Nothing. I go to my computer and...