The downgrade might not have gone successfully. I know I've used different version EmuNANDs on my 3DS and they worked just fine. FYI, I use Corbenik/Skeith on a daily basis.
Anyway. why do you keep experimenting like this? Seriously, no offence intended, but you clearly need to gather some more knowledge before experimenting like you keep doing. You're all over GBATemp, with a ton of issues, be it because of 3DNUS, Corbenik or Luma . x.x
You should really read how everything works before starting to play around.