> I don't know whether I mounted the /proc/bus/usb. I'm using Fedora and I've never needed to mount the usb > And how to use ./dfu-util to flash my fr uboot >From http://www.openmoko.org/wiki/Dfu-util dfu-util -a u-boot -R -D /path/to/u-boot.bin Though I cant think why you'd want to