The following things you need to prepare:
*A R4i GOLD 3DS flashcart
*A Micro SD or Micro SDHC card ranging from 1GB to 32GB
1.Download the latest R4i Gold 3DS firmware from the link here(http://filetrip.net/dl?FhXOBrY7vI),just extract it, then you will have a new folder called “Wood_R4iGold_V1.64” like below.
2.Copy the folder called “__rpg” and a file called “_DS_MENU.DAT”to the root of your Micro SD card. Make sure put them on the root of your Micro SD card. I also recommend you format your Micro SD before you do the paste job, and remenber to back up before format your Micro SD card.
3.You can creat some new folders in you Micro SD card, and then copy some game roms in different folders as you want.
4.Insert Micro SD card to your R4i Gold 3DS flashcart and then insert the flashcart to your 3DS/DS consoles. Now you can enjoy games.