maybe this is something everyone knows but i just noticed you can hot swap ds games while the system is on in the main menu and the system doesnt crash. the icon for the cartridge just goes to gray like nothing is inserted and when you put the game in it shows it. i booted it and then switched it to a flash cart and it shows up as a cartridge with a blank label if you try to run it it tell you to power off but this is probubly how the dsi flash carts will have to be booted im assuming. because after you put the flash cart in it wont tell you to turn it off until after you try to run it.