So... I have a New 3DS and was stucked in 10.7 until yesterday. Thankfully I've successfully use OoT3DHax with the Datel Powersave to enter the Homebrew Launcher and was able to follow the Plailect Guide with no problem and now I'm on A9LH with AuReiNand.
Then I used Uncart to convert my OoT3D...