This is what I am doing, I put two new folders in my usb stick 1st vuplus and 2nd duo which is in the vuplus folder, I then extracted the update to the duo folder and ended up with 5 files, which are, imageversion, kernel_cfe_auto.bin, reboot.update, root_cfe_auto.jffs2, splash_cfe_auto.bin. which isn't the three that should be in there