mp7: no more boot after EOS update

hello ya all :)
After a failed attempt to upgrade my MP7 EOS, it doesn't not boot anymore: No way to load the system or either the diagnostic menu... Nothing displayed on the screen, but it turns on as all the leds...
do you know another way to hard reset by myself (other than with diagnostic menu) or to repair the boot program???
thx so much :)
After a failed attempt to upgrade my MP7 EOS, it doesn't not boot anymore: No way to load the system or either the diagnostic menu... Nothing displayed on the screen, but it turns on as all the leds...
do you know another way to hard reset by myself (other than with diagnostic menu) or to repair the boot program???
thx so much :)