Hi guys. I own a F310BT with 1.0004 OS version. I didn't try to update the firmware because i'm able to run igo from testmode and i was afraid not to brick my device by doing something wrong. The only thing is that when i run igo 8 from test mode the sound is very low, like it doesn't use the player's amplifier. I can only hear the guidance voice when the music is off and if i listen very carefully. Does anybody know how to fix this?