Things You'll Need
Instructions
Download the latest version of the R4i SDHC firmware from the R4i website.
Open the zip file that mounts on your desktop by double-clicking on it.
Place the Micro SD card you use with your R4i SDHC into the card reader and plug it into your USB port.
Drag the new R4i SDHC firmware file into the root directory of the Micro SD card. The root directory is the main card file with no folders. Drag and drop a copy of the "Mario &Luigi: Bowser's Inside Story" onto the Micro SD card as well.
Remove the card reader from your computer and place the Micro SD card into the R4i SDHC. Plug the R4i SDHC into your DS or DSi and turn it on. Select "Mario &Luigi: Bowser's Inside Story" from the "Game" menu and click "B" to play it.