There is a few items than can be used to open the console you can even make your own stencil out of a plastic DVD spindle or other materials I know a guy that uses a tooth pick to great effect being almost as fast as using the unlock kit.
The main factor is not to cause damage to the console case I’m sure you can use your imagination. However opening the console voids all warranty!!
The first step is to make sure there is no power going to the console, then start by removing the Xbox HDD followed by both of the side grilles and the front face plate.
To remove the HDD simply press the release button.