Good luck with that, I'll leave you a tiny hint an say that yifanlu leaves out a lot of crucial parts to how it works unlike the ARM11 kernel exploit. I'm sure you noticed as well that as he got deeper he also got more and more vague. It's kinda annoying, but if you manage to get ARM9 and release it openly then awesome, and we'll probably open up that part as well I guess. We're a bit overly cautious sometimes though, but with good reason I guess.
Also, since we can't always have good news, we have our first bug on N3DS. Our firm launching procedure somehow breaks 3D. If you leave 3D on, you can use it but it breaks face tracking. Likewise, if you leave it off, it stays off while in the CFW and moving the 3D slider causes this weird interlacing between the two 3D layers. We hope to fix this though, it's a very strange bug.