The Immutable Root of Trust: A Technical Analysis of the Nintendo 3DS boot9.bin File
was discovered. Hackers figured out a way to trick the 3DS into thinking a custom piece of code was "official" during the earliest stage of the boot process. This led to the development of boot9strap (B9S) boot9bin file
However, it allow:
The boot9.bin file serves several purposes: The Immutable Root of Trust: A Technical Analysis