Although it isn't fully discribed on how to fully get the cartridge to work with the proper mini sd card 2 GB or less won't boot with a higher one . You also have to download the super flash program to export the files so the roms can appear in the boot screen . You can find the program doing some internet research there is a YouTube video that has a link to the website where you can download the update frimware and how to install it so the cartridge can boot the games . Overall china china.