VU+ Duo Assistance please

Trying to refashioned my duo presently running black hole with openatv or open vix. Unzip images onto usb pen drive and get vuplus/duo/relevant files on it.
Place in front usb and power on. It just ignores what's on both pen drives and boots to black hole.
Any ideas.

Regards

Should read flash also looking for instruction how to install emu for line.

Try formatting the USB stick with the HP format tool. Then try again.