After hacking my 2DS and getting my beloved original R4DS to work again I finally returned to 2DS' home menu, and to my surprise something in game card slot icon appeared. Actually it appeared blank but detected something is inside (probably since thanks to CFW blocked flashcards are not blocked anymore). However trying to run it just left me with an error forcing to turn off the console. This made me think... how does the R4 makes the original DS and DSL autoboot into it? Is it some kind of icon exploit (like bannerbomb for Wii), is DS vulnerable to something like a game title exploit or is it something else completely? So there I am, asking this what seems like not so stupid question. How does original R4DS achieves auto-booting (and why doesn't it work that way on hacked 3DS)?