Just did it today, DO NOT format emuNAND(and not have emuNAND partition on SD). This will make you boot gateway in sysNAND. open devmenu.3ds and import cia. turn off your ds and see the app in sysNAND.
You can't open the app without gateway mode
opening the app in gw then press home...
I had the my L button fixed perfectly after replacing the button detector(or whatever you call it). It's a hardware problem that comes out after years of usage. it's the thing that makes the click sound when you press it, but I think it's a rare part so good luck
Why is there acekard 2, 2i, RPG and akaio in separate options? they should just be combined and let the user choose between .sav and .nds.sav. there's no difference in the structure, just renamed
Just a suggestion though