Hence the "whatever you have in your neck of the woods". It's like you don;t actually want help.
You have 2 viable scenario
- Finish setting up your 11.2 3ds on B9S <-- Use the guide to complete one of the DSiWare injection methods to exploit the 11.6 3DS. This requires purchasing a game on the e-shop
- Finish setting up your 11.2 3ds on B9S, Use it to install NTRboot to a compatible flashcard. Or go to you local NOT Gamestop and find an Action Replay. Use device to hack 11.6 System.
Choice is yours. The DSiWare that you need is cheap The AR is not. I would still get a decent NDS flashcart (R4i Gold RTS) so you can play DS games and have a way to do this if necessary in the future.. But please finish setting up your 11.2 3ds on B9S. Do yourself a favor.