Indeed, the device is a unique blend of technological and biological, the same path which, if things had turned out differently, might have eventually led to Cell. Now, while this device is much less complex, it works by not only modifying its own internal structure, but also changing the body into which it is deployed. This is achieved by the use of a specialized self-repair system which is able to rapidly (For a given value of ''rapidly'') alter the body as per the device's instructions.
Ultimately, Gero hoped to create the perfect fighter, a highly adaptive android who would never be weak to the same thing twice. He failed, as the device cannot change nearly enough for that, and even with an optimum body, you probably won't see massive changes. Mostly, you'd see it rewiring the internal structure of the android in order to improve their pre-existing abilities.
Simply put, you have neither such an advanced self-repair system, nor a body designed to handle changes like that. Trying to use the device yourself would be actively harmful. You'd basically need to do a total rebuild, and also dump your current core, since the device also serves as the ''brain'' of the android in question.