safecerthax is compatible with all Old 3DS and Old 2DS devices in all regions on system versions 1.0.0 through 11.14.0.
This exploit will not work on the New 3DS, New 3DS XL, or New 2DS XL. Please ensure that the device you are modding is an Old 3DS, Old 3DS XL, or Old 2DS before continuing.
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### 준비물
* 최신 버전의 [SafeB9SInstaller](https://github.com/d0k3/SafeB9SInstaller/releases/download/v0.0.7/SafeB9SInstaller-20170605-122940.zip) (직접 다운로드)
* 최신 버전의 [boot9strap](https://github.com/SciresM/boot9strap/releases/download/1.4/boot9strap-1.4.zip) (직접 다운로드)
* The latest release of [Luma3DS](https://github.com/LumaTeam/Luma3DS/releases/latest) (the Luma3DS .zip file)
If you do not boot into Safe Mode, the system update menu after multiple attempts, you cannot follow this method. If this is the case, use [Seedminer](seedminer) instead.
In this section, you will change your Internet connection settings to use a proxy network designed to exploit the System Update feature of your device.
In this section, you will enter Safe Mode (a feature available on all 3DS family devices) where safecerthax will be triggered, which will launch you into the boot9strap (custom firmware) installer.
1. 전원이 꺼져 있는 상태에서 (L 어깨) + (R 어깨) + (십자 Up) + (A) 를 길게 눌르고, 누르는 상태에서 전원을 켜 주세요
+ 안전 모드로 부팅 될 때 까지 버튼들을 눌러 주세요 ("시스템 업데이트" 메뉴)
1. "OK"를 선택해서 업데이트를 확인해 주세요
+ 실제로 업데이트를 하는 것은 아닙니다. 이것은 익스플로잇의 일부입니다
1. "동의함"를 눌러서 이용 약관에 동의해 주세요
1. 이 업데이트는 에러 코드 `003-1099` 와 같이 실패를 할 겁니다. 이것은 의도적 행동입니다
1. Press "OK" to close the error message
1. 익스플로잇이 성공적이었다면 SafeB9SInstaller로 부팅되었을 것입니다
+ If the device freezes or crashes, force power off the device, then retry this section