I just recently bought a 3 in 1 and think it is great. I am encountering a strange problem and think I have a notion about what is happening, but I wanted some input first. Using Rudolph's tool, I load a game into NOR. I play for a bit and then save the game. I restart the DS and backup to a SAV file. Then, I go about my business. Later, when I come back, I've noticed that it lists the cart info as being blank or corrupted. Trying to restore from the SAV file does not work. What does seem to correct the issue, though, is if I load a different ROM into NOR, and then reload the original ROM into NOR. Then, I can restore the SAV (although it seems to do this for me) and play normally. My guess is that my save battery is bad. I've seen a picture of an open 3 in 1 somewhere and it looks like it is just a watch battery of some sort, so it shouldn't be hard to replace. Although, I'd rather not have to screw around and go through the effort, especially if someone thinks that there is another problem instead. Thanks.