Hacking Sky3DS+ with Fire Emblem Fates Special Edition error 002-0123

[garneth]

Hey. I got the new cart only to play FE fates, and I already had a working private header that I used with my old blue button sky, I even had the DLC's on the FE:Awk, but now I can't go online in the special edition. I had the private header on the right place on the CFG, I even changed the cart ID from C2 to 45, but I still get the error that says that I can't go online with this cart. Anyone knows what to do? Should I get a new private, and if so, where can I get a trusty one? I don't have the means to dump one.

Thanks in advance.

Edit: I just tried to get the DLC, and I am downloading it right now, but I still can't update the castle area, it gives the error message.