Ok. So I installed the non 3.0 version of RetroPie (2.0?) on my RaspPi 2 Model B. At the time, I though that 3.0 might not be complete/stable and that it would be better to install the other version. Now I realize that it would probably be a better idea to use 3.0. Are there any disadvantages to running 3.0? Also, is there some easy way to update the software to 3.0? Keep in mind I’m kinda new at this.