I have a VY Zero and am trying to flash it to the latest image. I have put the 5.1.019 on an 8gig usb flash drive fat32, turn the power off then power it back on with the USB plugged in and it just boots back in to the image I have on it already?

I need to update because I am finding that I get tune failed on normal channels. I do use IPTV on it and that works fine.
Just will not let me update? I have tried other USB flash drives as well.

Any help would be great.