The principle of 3ds and b9s is the key for b9 to start the chip bottomexploit by loading the lowest hardware of 3ds. You can digitally sign any firmware and install it on 3ds. No system upgrade can eliminate b9, which is the last supplement of 3ds.

Characteristics of 3ds technology

3ds adopts parallax barrier technology, which allows players to feel naked-eye 3D images without wearing special glasses. But only from a specific point of view, playing some games that require somatosensory will lead to ghosts. 3dsll only adds screen size, body size and a little battery life on the basis of 3ds.

A9 gains control of 3ds by modifying the boot priority, while b9 directly signs cfw and writes it into the system chip, so that the system can gain control of cfw as a legal program. The new3ds is an improved model of 3ds introduced by Nintendo in 14 and 10, and it is the last step to break through 3ds.