SamyGO

hi.i m new here.
I upgraded my home theater (ht-h4550k) with wrong file thrugh usb.
now,it s not working.just volume button and power button on my remote work and nothing else.the screen is black.
how can I fix it,downgrade or flash it to right version?thank u...

What do you call "wrong file"? You changed region and updated with fw from other region? No update should occur if you put any crap on USB, you must have been wrong somewhere.

My device is ht-h4550k.i upgraded with the file that was for ht-f4550.first my device didnt accept it,but i changed the name of file and it accepted.after updating finished,the divice didnt work any more.