got my hands on the leaked 3DS bootrom/kernel/whatever it is code

to prove that what I had was useful, I searched for the code that does the bluescreen brick thing that can happen on 3DS systems. I found it.

I won't be providing a link but if you know where to look on archive.org you'll find it in archive contents under a .7z with the 3DS hardware codename. After that, just grep for "BOOTROM".