Installing boot9strap (HBL-USM)

若需英語支援,請於 Discord 上的 Nintendo Homebrew 伺服器發問。

Technical Details (optional)

In order to exploit the SAFE_MODE firmware of our system, we need to inject an exploited WiFi profile.

As we already have Homebrew access, we can use slotTool to do this.

Once the WiFi profile has been injected, we will use SAFE_MODE, which is a recovery feature present on all 3DS consoles, to activate the exploited WiFi profile.

For a more technical explanation, see here for information about the unSAFE_MODE exploit.

Compatibility Notes

If your (Right/Left Shoulder), (D-Pad Up) or (A) buttons do not work, join Nintendo Homebrew on Discord and ask, in English, for help.


  • The latest release of SafeB9SInstaller (direct download)
  • The latest release of boot9strap (direct download)
  • The latest release of unSAFE_MODE
    • You may already have this from a prior section of the guide

第一節 — 準備工作

In this section, you will use Homebrew Launcher to launch slotTool, which will overwrite your Wi-Fi slots with hacked data. Then, you will copy the files needed to trigger the unSAFE_MODE exploit onto your device’s SD card. Your Wi-Fi connection settings will be temporarily overwritten while the exploit is active.

  1. Your console should be powered on and showing the Homebrew Launcher from the previous part of the guide
    • If not, power on your console and enter Homebrew Launcher through your method of choice (likely Pokémon Picross)
  2. Launch slotTool from the list of homebrew
    • If you get stuck on a red screen, forcefully power off the console by holding the power button for fifteen seconds, then retry this section
  3. Select the “INSTALL exploit to wifi slots 1,2,3 & shutdown” option
    • You will see some on-screen text and then your system will shut down
  4. Remove your SD card from your console and connect it to your computer
  5. 在 SD 卡的根目錄底下建立一個新的資料夾 boot9strap
  6. 解壓 boot9strap .zipboot9strap.firmboot9strap.firm.sha 檔案至 SD 卡的 /boot9strap/ 資料夾中
  7. 將 SafeB9SInstaller .zip 中的 SafeB9SInstaller.bin 複製到 SD 卡的根目錄
  8. Copy usm.bin from the unSAFE_MODE .zip to the root of your SD card
  9. Put your SD card back into your console

Section II - unSAFE_MODE

In this section, you will enter Safe Mode (a feature available on all 3DS family devices) and navigate to a menu where unSAFE_MODE 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)
    • If you’re unable to get into Safe Mode after multiple attempts, one of your buttons may be failing or broken. If this is the case, join Nintendo Homebrew on Discord and ask, in English, for help.
  2. 按下『OK』以允許更新
    • 此步驟將不會進行任何更新, 這只是觸發漏洞的一部分。
  3. 按下「I accept(我同意/同意します)」鍵以接受聲明條款
  4. The update will eventually fail, with the error code 003-1099. 這也是觸發漏洞的一部分
  5. 當系統提示您『你想要配置網路設置嗎? (Would you like to configure Internet settings?)』時,點選『Yes』
  6. On the following menu, navigate to Connection 1 -> Change Settings -> Next Page (right arrow) -> Proxy Settings -> Detailed Setup (image)
  7. 如果一切成功的話,您將自動進入 SafeB9SInstaller

第三節 — 安裝 boot9strap

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

  1. 出現提示時,輸入上方螢幕所顯示的按鍵組合以安裝 boot9strap
    • If the top screen is blank, power off your device and re-do Section III
  2. 過程結束後,按下『A』重啟主機
  3. 您的主機將會重啟至 Luma3DS 設定選單中
    • 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, these settings will be left on default settings
    • 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 不會特別在 HOME 主選單中新增任何特別的東西。 如果你的主機已經啟動到了 HOME 主選單,這代表自製韌體已經在運行了。
  • On the next page, you will install useful homebrew applications to complete your setup.

Section IV - Restoring WiFi Configuration Profiles

In this section, you will enter the Homebrew Launcher (this time using custom firmware) so that you can restore the Wi-Fi connection slots that were overwritten in Section I.

  1. 啟動『下載通信 (Download Play)』程式
  2. 等到你看到兩個按鍵
    • Do not press either of the buttons
  3. 同時按下『L』+『下』+『Select』鍵以啟動 Rosalina 選單
  4. 選擇『Miscellaneous options』
  5. 選擇『Switch the hb. title to the current app.』
  6. 按『B』繼續
  7. 按『B』回到 Rosalina 主選單
  8. 按『B』退出 Rosalina 選單
  9. 按『Home』鍵,並關閉『下載通信 (Download Play)』程式
  10. Relaunch the Download Play application
  11. 您的主機應該就會啟動 Homebrew Launcher 了
  12. Launch slotTool from the list of homebrew
  13. Select “RESTORE original wifi slots 1,2,3”
  14. Your device will then reboot