FFTA2, getting Libra with an M3

I'm playing FFTA2 and I've heard that you can get Libra by having FFTA inserted in the Slot-2 of the DS, but I don't have FFTA.Anyway I can get past this?EDIT: I do have the FFTA ROM on my M3 as well, just to clear that up :0

slot 2 device required for that *shrug* I don't have one but we used one for pokemon XD gba roms don't work on slot 1 devices

You'll probably need it. If you have a Slot 2 flashcart, not sure if you will be able to detect the FFTA GBA rom on the media from the ROM itself, probably not. Cheating works too.