Hey guys. Needing to buy a couple of used 3dsxls for my kids for Christmas. They both have dslites running flashcarts at the moment but want to upgrade. Is there anything that I need to be aware of when buying the 3dsxl's to work with flashcarts? I have read that you have to have a firmware number below 4.5. If it is above that, are they easy to reflash to an earlier firmware? Also do the flashcarts work the same as the DS ones? Multiple games on the same cart?? Also any recommendations on the best flashcarts to get?? Thanks in advance. Nick.