Here is the most intelligent thing you'll do with your 3ds :
buy a game that force update to 4.1 or 4.5 (or between)
update to 4.1 or 4.5 (or between)
either you buy a gateway 3ds or wait for other ones making profit out of the exploit.
now, maybe you don't know, but the DSTWO doesn't play 3ds games, only ds games.
there is a list of games that forces update to 4.1 or 4.5 (or between)
i am too lazy to find it
you'll have to wait for someone else to link it for you
sorry for my laziness
luigi's mansion forces update to 4.5.
bye