I'm on a Gateway, using old 4.x firmware on a 3DS XL. I was running the 3DS side with 9x Firmware with the virtual NAND. I had loaded the Blue cart to play NDS games. After I was done, I ran the software to reconfigure my 3DS for 3DS mode, but upon booting with the Red card loading the virtual NAND via the options menu, I still do not see an Icon showing for the Red cart, nor does pressing "select" do anything. I can still run the downloaded content from the 3DS default menu though.