Things You'll Need
Instructions
Insert the microSD card into your computer's card reader or USB adapter. Click "Start" and "Computer." Under the "Devices with Removable Storage" heading, right-click the name of the microSD card and click "Format."
Select "FAT32" under the "File System" drop-down menu. Click the check box next "Quick Format" to de-select the option.
Click "Start" and "OK" and wait for the format to finish. This may take a few minutes.
Download the latest software for your DSi card. DSi card manufacturers, such as R4 and Acekard, regularly release updated software for their products. Once you download the software, double-click it to open the file. Click "Extract" and select the microSD card as the extraction location.
Find the programs you want to use and download them to the desktop. Double-click each program and save it on the microSD card.
Right-click the "Safely remove hardware" icon at the bottom of the screen and disconnect the microSD card.
Insert the microSD card into the slot on the back of the DSi card.
Insert the DSi card into the Nintendo DSi and power on the DSi.
Select "Files" or "Applications" and scroll to the program you want to use. Press "A" to run the program.