In GBA Temp, there is a hot discussion about NTR CFW 2.2. Which can be Anti-Pircy Region-Free CFW on JP/EU/US/AUS New 3DS , You can see the forum
Before talking about NTR CFW 2.2 ,what you need is NEW 3DS LL ,Genuine Cubic Ninja card or Sky3ds card
* Language Emulation plugin: The Language Emulation plugin could solve some language issues of region-locked games, such as games refuse to run or displays wrong language. You can play EUR Majoras Mask on JP N3DS by installing this plugin now. This plugin also allows you switch languages for games that have multiple language files.
*Improved game compatibility on NTR Mode: more games are runnable in NTR Modes now, including MH4.
*Hot-key settings: You can redefine the default X+Y hot-key for NTR Menu now, you can also define a hot-key for screenshot.
*Improved compatibility for layeredFS plugin.
*Improved success-rate for BootNTR.
V8.1.0/9.0.0/9.1.0/9.2.0 of US version ,EU version,JP version and AU version ,NEW 3DS/LL
Note: System firmware >= 9.3.0 might never be supported
How to install NTR CFW 2.2 ?
Note:(if you have installed the old version NTR ,You need to delete the save data and restall)
1.Download zip file :http://filetrip.net/dl?c0fcnfa5mZ
2.Copy ntr.bin to your N3DS’s microsd card.
3. Start Cubic Ninja, Click Edit->QR Code and scan the QR file. (JAPAN.png for JP consoles, and EUROPE_USA.png for other consoles)
(Hint: If you have installed other exploits already, hold L+R+X+Y at game’s main menu to erase the savedata)
4 .Press A to install the BootNTR.
5.Turn off your console.
How to boot into NTR Mode:
1 Turn on you console, wait a few seconds before starting Cubic Ninja.
2 Click Edit->QR Code, after booted up successfully, the screen will flashes blue and rerturn to Home Menu.
3 If it was failed, turn off the N3DS and try again.
You can see the main function of NTR CFW is you can use your NEW 3DS LL play different laguage games ,for examples : EU version “The Legend of Zelda” “Majora’s Mask” is seems to work with a 3DS Version of Japan by plug-ins.