hi there -do'nt know if you figured out your problem yet but I have the same unit and remote-btw-has been great!-anyway to use the remote flip it to the backside, and down in the left corner in dark brown lettering is the F/N tab(next to CAPS) just push the F/N to whatever mode you need and away you go- you can change at any time, and works like a charm-except if you have big fingers - the numbers are in dark brown and start where the letter Q-1 isW-2 E-3 R-4 etc. the symbols same-they are a bit hard to see, and you will need a bit of light lol- tc-