Hallo to all. I have LG LRA-750 recorder and i mess-up OP code numbers.Is anybody familiar with this unit that can help me?.I try code hack side but i can't get thru. If you have this unit press channel"up and down" button at the same time until you see screen with OP #.I need to fill XX.1 x,2 x,3 x up to #8.To EXIT this set-up you have to press MP key.WHat is MP key? Thank's