trevi mpr 1634
 

this was the original firmware installed,it wasn't working as it have to, so i tried to fix it, now it doesn't show anything, even if the computer detect it, and show me files in it, but it does not work, nothing to see, nothing to hear! somebody can help me

ive tried many of programms to fix it but nothing, i also used the original soft he one to format tells thaat it protected and the upgrader tells me it is busy and i should try later but it always give me this answer