Make a new folder on the SDNAND titled dsi. You might be thinking how to play roms in PC and you are wondering which usually program to work with, whether you should select one of those low-priced ones or if you should dedicate some money and buy some quality software. After much wait, the sequel to the hit DSiWare animation software Flipnote Studio is now available on the Nintendo 3DS. These are ARM9 exploits that take over a DSiWare title. melonDS core in RetroArch has not added DSiWare support yet. I put my roms into a folder roms/nds on my 3ds sd card, and ran the forwarder on the roms in that folder. A complete guide to installing DSiWare backups, without the need of DSi Shop. Insert the flash card into your Nintendo DS.
From the Nintendo DSi main menu, tap the Game Card icon, then select the appropriate option from within the game.
How to play dsiware roms hiyaCFW users: Copy the title folder to your SD card root.