Hi everyone. I new on this forum. Please help me if you can. I have IKBC 104. This keyboard came without LEDs but support them. I added 4 LEDs for WASD keys, then I got the situation that the fn key is always on. fn+F9,F10,F11 are working but others not. I did the reset (fn+del 3sec, fn+R), no change. I checked the switch, no short circuit. It seems that fn locked by firmware. Can I flash the firmware. Were can I get it?