When I try to use a rubber band, my screwdriver ends up making a hole on the rubber band.A neat trick I do to get stripped screws out, is to put a rubber band over the screw and then jam your screw driver into it and turn. It seems to help in most cases, but the 3DS screws are so tiny it may not be of any use. Just stretch out the rubber band over the screw first then try putting the screwdriver over it while its still stretched. GL
ouch, sounds like you're S.O.L, even if you get it open you need replacement screws on-hand. But I'm pretty sure the only way of removing the screws would be micro drilling, even then it's dicey stuff. Maybe just consider trying to remove the casing via destruction and just buying a new shell for it, since it really sounds like you dun goofed, though maybe somebody else knows a neat trick that might help, doubt it though.When I try to use a rubber band, my screwdriver ends up making a hole on the rubber band.