Ready to trade in your old Nintendo 3DS for a brand new Nintendo 3DS XL, launching in the US this weekend? Better hold on to your horses first. Unless you want to start absolutely from scratch, you will most likely want to transfer your files and games from the old system to the new one. But alas, it won't be a quick and easy ride, as performing a system transfer between the two generations is quite a laborious undertaking. You even need a screwdriver to do so!