I have a few question that I can't seem to find reliable answers to, first, what would happen if I installed a legit EUR cia on my US 3ds? And secondly, is the the emuNAND generated by the Gateway launcher region free?
Launching it in Classic mode or through rxTools is essentially the same as sysNAND - no checks are patched out, meaning you can't launch games from other regions. Some of this might be wrong in regards to region-free carts, though, since I don't pay much attention on that front.
Does rxTools make it region free?