Installing boot9strap (safecerthax)

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Technical Details (optional)

For technical details on the exploit that you will be using on this page, see here.

相容性資訊

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.

必備項目

操作說明

Section I - Hardware Button Check

In this section, you will see whether your shoulder buttons are working on your device. This will determine which method you will follow on the next page.

  1. 啟動您的主機
  2. Once you see the HOME Menu, press the (Left Shoulder) and (Right Shoulder) buttons at the same time
    • The camera applet should appear
  3. 關閉您的主機

If the camera did NOT appear, you cannot follow this method. If this is the case, stay on your current firmware and ask Nintendo Homebrew on Discord for help.

第二節 — 準備工作

In this section, you will copy the files needed to trigger the safecerthax exploit.

  1. 將 SD 卡插入至電腦中
  2. 解壓 Luma3DS .zip 內的 boot.firm 及 boot.3dsx 到 SD 卡的根目錄底下
    • 「SD 卡的根目錄」指的是你的 SD 卡含有 Nintendo 3DS 資料夾的目錄，而非該資料夾內部
  3. 在 SD 卡的根目錄底下建立一個新的資料夾 boot9strap
  4. 解壓 boot9strap .zip 的 boot9strap.firm 及 boot9strap.firm.sha 檔案至 SD 卡的 /boot9strap/ 資料夾中
  5. 將 SafeB9SInstaller .zip 中的 SafeB9SInstaller.bin 複製到 SD 卡的根目錄
  6. 將 SD 卡插回主機中
  7. 啟動您的主機

Section III - safecerthax proxy

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.

If you haven’t already, make sure you have a working Internet connection set up on your console.

  1. Launch the System Settings application
  2. Navigate to Internet Settings -> Connection Settings
  3. Click on your network connection slot and navigate to Change Settings -> Next Page (right arrow) -> Proxy Settings
  4. Set “Proxy Settings” to “Yes”, then click Detailed Setup
  5. Set the Proxy Server to ssloth.nintendohomebrew.com, and the Port to 8080
  6. Click OK, then click Save
  7. When prompted, click “Test” to perform the connection test
    • The test should succeed

  8. Click “OK” to continue

  9. 關閉您的主機

Section IV - safecerthax

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. With your device still powered off, hold the following buttons: (Left Shoulder) + (Right Shoulder) + (D-Pad Up) + (A), and while holding these buttons together, power on your device
    • Keep holding the buttons until the device boots into Safe Mode (a “system update” menu)
  2. Press “OK” to accept the update
    • There is no update. This is part of the exploit
  3. Press “I accept” to accept the terms and conditions
  4. The update will eventually fail, with the error code 003-1099. This is intended behaviour
  5. Press “OK” to close the error message
  6. 如果一切成功的話，您將自動進入 SafeB9SInstaller
    • If the device freezes or crashes, force power off the device, then retry this section

第五節 — 安裝 boot9strap

In this section, you will install custom firmware onto your device.

  1. When prompted, input the key combo given on the top screen to install boot9strap
  2. Once it is complete, press (A) to reboot your device
  3. Your device should have booted into the Luma3DS configuration menu
    • Luma3DS configuration menu are settings for the Luma3DS custom firmware. Many of these settings may be useful for customization or debugging
    • For the purpose of this guide, leave these options on the default settings (do not check or uncheck anything)
    • If your device shuts down when you try to power it on, ensure that you have copied boot.firm from the Luma3DS .zip to the root of your SD card
  4. 按『Start』鍵以存檔並重新啟動系統

At this point, your console will boot to Luma3DS by default.

  • Luma3DS does not look any different from the normal HOME Menu. If your console has booted into the HOME Menu, it is running custom firmware.
  • On the next page, you will install useful homebrew applications to complete your setup.

Section VI - Restoring default proxy

In this section, you will restore the Internet settings back to normal.

  1. Launch the System Settings application
  2. Navigate to Internet Settings -> Connection Settings
  3. Click on your network connection slot and navigate to Change Settings -> Next Page (right arrow) -> Proxy Settings
  4. Set “Proxy Settings” to “No”
  5. Click OK, then click Save
  6. When prompted, click “Test” to perform the connection test
    • The test should succeed
  7. 關閉您的主機

繼續至完成安裝