Alright, thanks to zoogie and his tool, we may found a way to install FBI on a 2DS (It's also useful for O3DS if you don't want to do the whole cfw process) :
Download this pack : http://www.jheberg.net/captcha/fbi-injection-v15/
1. Use the gateway launcher.dat to create your emunand (format emunand, backup your sd card content first)
2. Setup rxTools : http://www.rxtools.net/#!howto (replace the rxTools.dat with one of the patched ones).
3. Update your emunand. (rxMode -> System Settings -> Double check you see RX-E in front of your firmware number (if you don't, stop here) -> don't exit the system settings -> Update your console)
4. Use rxTools to get your nand xorpad (Decryption Options -> Generate fat16 Xorpad). Put it on the FBI injection folder
5. Open emunand tool, choose extract emunand then choose the FBI injection folder for the destination
6. Execute decrypt.bat
7. Open WinImage.
8. Drag and drop the emuNAND.fat16.bin on the program then click on OK
9. Go to title/0040010/00022300/content for a EU emunand, title/0040010/00021300/content for a US one, and title/0040010/00020300/content for a JP one.
10. Delete the *.app and the *.tmp from the content folder.
11. Click on Image->Inject then choose the *.app in the content_region folder.
12. If needed, rename the tmd file to match with the name of the one you deleted, then inject it too.
13. Save and close WinImage.
14. Execute reencrypt.bat
15. Restore your emunand with emunand tool.
16. Boot on the emunand with rxTools. Select Health & Safety app. FBI should boot instead.
Tested it on a 4.2 O3DS + 9.8 emunand and it works fine, so it should work on a 2DS too.
A big thanks to @zoogie for the original method and @Riku for making it work on 9.0-9.8 (emunand).
Oh my god, pleassssse help.
I have followed all steps from page 1 and have set an emunand via rxtools 2.4.
What I cannot do is get above to work.
Got myself to 15 and have a emuNAND sitting in my fbi injection folder.
Where do I place it on the sd card, tried in rxtools folder next ton and folder, but won't even boot into rxtools.
Please please help.
