We're tempering our excitement with a healthy amount of skepticism, but this video would appear to show custom code running on the brand new Nintendo DSi. It comes from Yasusoft, developer of the YSMenu custom DSTT menu. Experimenting with a friend's DSi, he seems to have gotten a "Hello World" message running from somewhere within the DSi's photo channel. GBATemp posters speculate that he is using a hacked TIFF image file to cause a buffer overflow, much like early PSP exploits did.
Our skeptical nature causes us to think that maybe the DSi's photo channel allows for animated images, or, on a more basic level, the video was somehow faked. We shouldn't be that surprised that someone is already running unsigned code! If this is true, it comes just one day after we asked how long it would take.
Yasu claims to be reluctant to release the method out of distaste for the proliferation of flash cards, though he is considering releasing some kind of "custom firmware."
[Via GBATemp; thanks, mko!]
