ok...there's fpga code updates and nand image updates...i think @YukiSnowmew meant the fpga fw update and @RattletraPM the image fw update
auto
btw...my ardsi was originally without the microsd slot...i added one just because the pads and the traces for the power regulator and the passives...
Disclaimer:
From this point onwards, you *proceed on your own risk*. While the instructions below have been tested with no issues at all, unexpected stuff may happen. It may even be you doing something wrong. I am not responsible for bricked flashcards or any other problems arising from...
here's what i did http://pastebin.com/X2QA19vT
this is the modified D9 https://usercontent.irccloud-cdn.com/file/m3k08fpS/Launcher.dat
keep in mind that you'll end up with 10.7.0-32 (use your region update pack for n3ds when updating with sysupdater)
good luck!
also keep a 2.1 backup...maybe...