Hello guys!

My bm54 unit had lots of distortion and squealing noises! I've already do the amp upgrade, but the problem persists.

Maybe it's something about the processor chip? Anyone could help me?
I'm from Portugal, so it's difficult to send the unit. If you could try to help me through message that would be perfect..

I just need to know if anyone has experienced that problem and how to repair it (which part is deffected, etc)

I've already made the firmware update, de-soldering flash. It makes any difference if I try to reprogramme it with red plug on the board?

Thank you so much in advance!