I'm new to this forum and i don't know if this is the right place to ask, but on these days i've seen a VIDEO and a GUIDE to make a "matrix" hack on some casio calc models, i don't know if mine is supported, but i tried to do it, and now I'm blocked at this part:
I can't arrive at the screen with "n="9. Press 3
9. Press 'M+' Button Repeatly (until screen changes, press 'M+' again to change to last screen possible)

Thanks in advice,
Nikk0s.