My friend has a Buzz TV B5 STB android Box, it was playing and on, suddenly screen went Black and no signal. It is not HDMI cords, its not a tv issue those have all been trouble shooted, can not even see the BIOS if you reset the box. It is a black screen , but the blue power light is still on. Is there a firmware I can download and plug into the box to try and boot it up from a USB stick ?