hi, i recently bought a h9s was working fine on openatv 6.2 tried to upgrade the plugins went through everything but now nothing works i have no picture at all seems as though the box just lights up but doesnt turn on .tried to reflash but that wont work either used all the little tricks i have read on here using different usb's changing the "noforce" file to "force" just wondering if there is anything i could do. cheers