First, NES works, but is horribly laggy, skips frames, and has broken/glitched music. It recognizes all the ROMs I installed. The other three, however, won't boot. I got NES through Cydia - the other three through a thread on another forum. They're the beta test versions for 2.0.x firmwares. What would make them not work? Why is NES so laggy? Could it be caused by the fact that I only have 70MB free in the partition?