Have not tried this myself, but if you look up under where the boot release "handle" is you will see a plastic insert. Carefully prise this out and you should find a cord. Pull it, and the boot should open. Bit of a security issue though, so lets keep it to ourselves!! Let us know how you get on. I had a 1.4 Active Idea, and this had a similar system for releasing the fuel filler cap, but strangely, my 1.4 Dynamic does not have this facility as the locking mechanism is not fitted.