Well, I attempted the DSiWarehax last night for my black New 3DS and....it worked! Or, at least it did until I completely screwed everything up.
I successfully downgraded and installed A9HL, but then I realized that I was supposed to backup the tickets for all of my dumped games before performing the system transfer. As such, the only games that would show up were ones that I had bought digitally on the eShop. So, being the pioneering geniusidiot that I am, I decided to try to manually move the Title folders in the Nintendo 3DS folder around. This was, predictably, a disaster and caused all of my homebrew applications to stop working and ALL of my games to disappear. I then moved the folders back, which fixed the eShop games, but my FBI and Homebrew Launcher would still not work.
No fear, I'll just inject FBI into Health and Safety, open FBI, delete the homebrew titles, and then reinstall. This would have worked great, except I apparently deleted the wrong FBI title, which deleted the Health and Safety app.
No problem! I'll just restore from my Nand dump. Except, oh wait, the Nand dump is corrupted!
So now, I'm not sure what to do. How can I install CIA's without access to FBI? I assume I could launch it from Homebrew Channel, but how do I even launch the Homebrew channel now? Any suggestions?