ok got openatv latest build put on flash drive done the following
Power off the receiver
Ensure no other USB devices are plugged into the receiver while flashing.
Insert the USB stick containing the image files into one of the USB ports on the receiver, rear USB port is advised if possible.
Power the receiver on.
Immediately after powering on PRESS AND HOLD the front power button until ‘flashing..’ appears on front display.
nothing happens