Crown3DS, ostensibly the first working 3DS flashcart. Like the PassMe and PassCard solutions that appeared in the DS’s early homebrew days, this isn’t the most elegant solution in its current, presumably non-final state.
3DS owners have been able to run updated flashcarts on their handhelds for some time now, but only in DS mode, which doesn’t have access to much of the 3DS hardware. Though this new Crown3DS team has figured a way to get into the 3DS mode, it’s unfortunate they’ve skipped over homebrew and gone straight to commercial games.
At the moment, the device can only run one commercial ROM, and a crappy one at that: Splinter Cell 3D. The group intends to dump more 3DS games, run more tests, fix bugs in the cart, and increase its ROM compatibility.
Because the Crown3DS is not yet on sale and unavailable to the public, it’s unclear whether Nintendo can to block this device with a future 3DS update (the cart runs on the latest v2.1.0-4 firmware). The company has made efforts to keep 3DS/DSi piracy from reaching the problematic levels experience with the DS, releasing regular firmware updates, some of which increase anti-flashcart security.