hi, i take it from your post that your car is a P12 primera?
when you press the fob buttons can you hear the button "click"?
if not than the fob is no good.
the green transponder has nothing to do with tuning the key fobs (keyless entry) it is for the imobilizer only.
will the car start using both keys?
you should not be removing the chips from the keys as this can damage them.
regards