The original Acekard2/2.1 uses AKAIO 1.9.0. If your cart fails the clone check, it can instead use the BL2CK kernel. AKAIO has very good game and homebrew compatibilty, so this is one of the more reliable carts out there.

Unlike the newer Acekard2i, the firmware on these carts cannot be flashed to support newer DSi/3DS firmware versions. It also cannot be flashed with ntrboot as a result.

Setup Instructions (AKAIO)

1. Format the SD card you are using to FAT32
2. Download AKAIO 1.9.0
3. Extract the AKAIO 1.9.0 .zip file to your SD card root.
4. Place any .nds game ROMs you’d like to play into a folder of your choice which isn’t the __aio folder.
   • (Optional) You may want to create a Games folder to store your ROMs in to keep the root of your SD card organised.