Some are calling it the 'Pandora' of the 3DS era!Recently, SIGHAX and Boot9Strap was released, but @SciresM, has decided to tease a few clues on what the next big exploit can do on all models of the 3DS currently available!
Back in the day, the original Sony PlayStation Portable (PSP) was basically cracked wide-open once the Pandora battery was found, and now its Nintendo 3DS turn!
Basically it works by using a physical Magnet to trick the lid switch until thinking your 3DS is still closed, and then you press and hold a few buttons, and the 3DS then boots-up into special factory mode bypassing all security checks/firmware and loads the special ARM code running from a firmware flashable older Nintendo DS Flashcart.
Since the original news was teased a few days ago, a video of it working has been released as proof, and short update of when maybe we might see a 'public release', seems to be not until its tested with more different DS flashcarts!
3DS Unbricked with Magnet + DS Flashcard (via) GBATemp