No name patriot 16GB worked with wii format after HP format tool. I suspect that it is 3rd party software keeping most people from using their drives. I am unsure if the USB format tool on the wii zero files the drive during format. Most U3 enabled sticks have them embeded in the boot sector of the drive and regular format will not erase. I ran into this problem when I was trying to install DSL on a thumbdrive and stumbled onto this program. If this helped you at all, give me thanks. If not..keep it civil. ;-)
BTW, the program will install to your root C drive under a folder called drivekey. Run the HPUSBFW.EXE program. It is the one with the GUI.