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Erase eMMC

You can use the RKDevTool utility to erase the eMMC storage.

Installing RKDevTool​

  • Install Drivers

Download and extract the DriverAssistant v5.0 file.

Locate the DriverInstall.exe file and run it as administrator:

To install driver: Click the Install Driver option

To uninstall driver: Click the Uninstall Driver option

tip

If you have previously installed other versions of the driver, please uninstall them before installing the new one.

  • Download RKDevTool

Download the RKDevTool utility, then extract the downloaded file. The RKDevTool.exe is the executable program - simply double-click it to launch the software.

Using RKDevTool​

tip

Maskrom mode serves as the "hardware first-aid kit" for embedded devices, enabling device recovery through direct low-level chip interface operations.

Maskrom mode is a built-in low-level recovery mode in Rockchip chips that activates automatically when the device cannot load a valid bootloader from any boot medium (eMMC, SD card, etc.).

This mode allows for device firmware reprogramming via the RockUSB protocol.

Entering Maskrom Mode​

Radxa E54C features a dedicated Maskrom button. When this button is detected as pressed during system boot, the system will automatically enter Maskrom mode!

Required Equipment​

  • One USB Type-A to Type-C cable
  • One pin or toothpick
  • 12V/2A DC power adapter (DC5525)

Entering Maskrom Mode​

  1. Connect Radxa E54C to your PC using a USB Type-C to Type-A cable

  2. Press and hold the Maskrom button using a pin or toothpick

  3. Connect the 12V/2A DC power adapter

  4. Release the Maskrom button

Normally, the power indicator will stay lit when in Maskrom mode. If the behavior is different, you can repeat the steps to try again!

Erasing eMMC​

Use the RKDevTool utility to erase the eMMC.

Before using the tool, ensure your PC can recognize the device in Maskrom mode, then follow these steps:

  1. Open RKDevTool

Make sure the host can detect the Maskrom device and select the advanced options.

  1. Write the Loader

Go to the Resource Download page to download the appropriate Loader file, then modify the Boot option to select the downloaded file.

  • ① : Select file path
  • ② : Download Loader file
  • ③ : Operation feedback information
  1. Read Storage Capacity

Select the ReadCapability option to read the current device storage capacity.

  1. Erase eMMC

First select EMMC, click Switch Storage to switch the storage, then click the EraseALL option to clear the eMMC contents.

  1. Reboot the System

Click the ResetDevice option to restart the device.

Installing System to eMMC​

You can install the system to eMMC according to your host platform: