Hi bro, just wondering if you could help me out here. So I’ve managed to salvage my hu (blaupunkt New York 830) by flashing a new firmware. However I think my speakers are gone coz when I connect my iPhone, the songs are actually playing on my phone but the audio is not transmitted/ intermittently transmitter thru my speakers both front and rear. Even the radio doesnt play thru the speakers . In this case, do u think all my speakers are roasted?