I'm currently able to use my R4i Gold on my 3ds, but I want to update it to 2.2.0-4 compatibility before I play MK7, Super Mario 3D Land, etc. My current 3DS firmware is V2.1.0-4. I'm not sure what my R4i Gold firmware is but has an icon with a halo and wings when I go to open it. I just recently bought it and it came in a box with Christmas decorations on it. I put the update on my memory card, but when I try to install it, it keeps saying "card check fail." I took out the cartridge and put it back in but the results are still the same. Anyone know how to install it without getting this error?