Exit svdt and the Homebrew Launcher, and go to the Gateway 3DS menu. You cannot get into this menu from emuNAND, you MUST access it from your sysNAND. Once in the Gateway 3DS menu, scroll to the right until "Backup 3DS Game Cartridge" is selected. Hit the "a" button to select this option, and then hit the "start" button to begin dumping the game. Take note of the last four digits of the game code. This will take some time, especially if your game is very large. once the LEDs are off, you can remove the flashcard, remove the SD, put it back on the PC, delete the firmware file and copy your 3DS games (in .3ds format) to the root of the SD.
You can now delete the .3DS dump from your SD card, in order to free up more space. Once Gateway 3DS tells you that it has finished, press the "a" button to exit, shutdown your system, and transfer your SD card from your 3DS to your PC. If you haven't, extract the 3DS to CIA converter you should have downloaded into it's own folder.
I do not advise to copy the games with the sd in the Sky3ds+, the flow is horrible, an SD card reader is cheap and will do a better job. Sky3ds+ or SKY3DS Plus is the best 3ds flashcard that is compatible with 2DS, 3DS and New3DS in version 11.10.0-43 and all lower firmware. In addition, with orange buttons, Sky3ds+ can turn 3ds games as simply as possible. Highlight the files you just downloaded from R4, Shooting Games right-click them and click â€śCut.â€ť Right-click within the microSD card and click â€śPaste.â€ť This moves all of the files to the card.
On the root of your SD card, there should now be a file with a .3DS extension, whose name should match the four letter code given before. Copy this file from your SD card to the "roms" folder in folder your extracted the converter into.
Click â€śOpen folder to view files.â€ť This opens your microSD card. With the old 3DSâ€™s SD card info copied to a PC, put your new micro SD in an SD adapter and place it into the SD card slot on your computer. Copy and paste all the 3DS game files onto the new SD card, which can take a little while. As I instructed earlier, you copied all the info off your old 3DS SD card onto a computer and purchased an appropriately sized micro SD with an SD adapter, right? Good, because now is the time to do the â€śPC-based transferâ€ť as Nintendo calls it. Again, you can choose to do this wirelessly, but I can tell you from experience that attempting it with more than 4GB of data takes hours and hours to do.
On the root of your SD cards, there should be two new files, both with an extension of ".xorpad". Copy these files to the folder in the converter folder called "xorpads".