Things You'll Need
Instructions
Insert the MicroSD card into the USB adapter and hook the adapter to your computer.
Open Windows Explorer by holding the Windows button and hitting the "E" key.
Right click the MicroSD card in Windows Explorer and select "Format."
Select "FAT32" as your file system in the drop-down menu, then hit "Start" to format the drive.
Navigate to the DSTT downloads page at NDSTT.biz.
Download the most recent version of the TTMenu Kernel, unzip the file and drag its contents to your MicroSD card.
Unhook the card and card reader from your computer.
Insert the MicroSD card into your DSTT cartridge and place the cartridge in the Nintendo DS.
Turn on the Nintendo DS, and it will automatically load the DSTT main menu.