Firstly, I'd like to say that while this method will allow the machine to create a finer grind, in the process, we will remove the safety systems that protect the grinder from damaging itself. Modifying the grinder in this way can damage your grinder and will likely void the warranty (if there is one). After completing this modification, be well aware of the distance between the burrs before you start grinding.
My current opinion is that the even after completing this procedure, this grinder is not capable of producing a good espresso grind. However, it will produce a grind much finer than what it is natively capable of.
This method uses two step approach. In the first step we remove the physical barrier preventing the hopper to turn past the finest grind level. In the second step, we disable the electronic control that stops the grinder from turning on when the bean hopper is turned past the finest grind level.