I just got a used 10.1.0-27E 2DS from a friend (really, really cheap). I was installing ninjhax 2.5 when something came to my mind. This 2DS has the updated Ironfall Invasion from the eshop installed and I have rxTools on my N3DS. Could I just download the older, exploitable version of Ironfall as cia, install it on another SD with my N3DS and then just replace some files on the 2DS for, perhaps, dongrade Ironfall? I know this things are not as easy as it sounds but I really would like to know why it wont work.