MGF bonnet stuck closed

Hi

I am new to the forum and having done a whole lot of research I have identified that no one is willing to share how to unlock the bonnet when the cable is either snapped or not working to open the bonnet.

Can some one please advise me how I can do this without taking off the bumper!

I understand there is way of doing this through grill, please help me as I am now getting frustrated.

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