I've already tried a factory data reset with no luck.
I've tried a hard reset too, and there wasn't any luck neither.
So I was thinking in flashing it with a modded ROM, but the only one I see is Shaunmt's Modified ROM, but it is for the NXM865FD board, and I have the EBM865FD.
Is there any modified ROM I can use to try and fix the sound problem, or can you recommend me something to fix it?