OP-Z Mic not working... Anyone else have that ?

The mic on my OP-Z does not work. The led is green when I tilt the unit, I tried to increase or lower the volume but nothing happen… no sound in any case. Am I alone in this case ? It’s not a big problem but a little bit frustrating… Difficult to know if it’s a hardware or a software thing. I just update the firmware but I didn’t try the mic before i updated so…

Press the [screen] key to turn on the mic. The led will turn red.

That was it. Thanks a lot !