Hi fellas

I've been searching for days, tried many things, non worked.

I lost the remote control of my old beloved rack audio system long ago, since I reside in Iran I can't by any replacement from outside Iran and its not avaliable in domestic market.

So I tried to read and learn how to do it.
I managed to use my android device to send signals to the system and successfully powered on/off and volume up/down, but I need REAR_LEVEL_UP and Down as well as Center volume up and down (the system default is set to mute both).

Please help if you can :)

Love from Iran
Farhad