u should be able to get to it from underneath behind the front bumper, i did with mine but i had taken my a/c out and that black plastic thing aswell so may be harder for you
yeah from under get a screw driver and force the latch open, easier if someone pushes down on the bonnet while you do this and then lifts it up with you have the latch open.
look at another car with an open bonnet to see what i mean by the latch