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Firmware Flashing

Applicable Versions

This document applies to devices with firmware versions lower than v1.2.0-2-gf71af68. If your firmware version is equal to or higher than this version, please refer to the Firmware Update document and update directly through the web tool without entering DFU mode.

Screen Version Determination​

  • Please check whether the chip shown in the image below is present on the back of the screen.

  • If present, your screen is the new version and supports self-updating of firmware.

  • A comparison of the old and new screen versions is as follows:

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Checking Firmware Version​

Through the Web Tool, you can check the current firmware version number after connecting the device.

Entering DFU Flashing Mode​

Power Disconnection

Before starting, completely turn off the printer and disconnect the power supply. Do not plug or unplug cables, arrange wiring, or touch terminals while the device is powered on.

You can make the screen enter flashing mode by any of the following methods:

  • Method 1:

    1. Connect the screen to your computer using a Type-C data cable.
    2. Press and hold the BOOT button on the back of the screen, then briefly press the RST button, and release the BOOT button.

  • Method 2:

    1. Press and hold the BOOT button on the back of the screen.
    2. Connect the Type-C data cable between the screen and the computer, then release the BOOT button.

Flashing Methods​

Power Off Operation

Before connecting or re-plugging the USB cable, completely shut down the printer and disconnect other power sources. Do not allow the tool board to be powered simultaneously via the printer's power supply and the USB interface.

USB Connection Compatibility

Some computer USB ports may cause unstable flashing due to driver or signal compatibility issues. If connection fails, try switching to a different USB port on the computer or use a reliable USB hub. If the error shown below appears, check the USB connection and drivers first.

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  1. Download and install SetupSTM32CubeProgrammer and the STM32 DFU driver from the Auxiliary Software Download Page.
  2. Save the firmware downloaded from this page to a location on your computer that is easy to find.
Windows File Extension Display

Windows may hide file extensions. Please check "File name extensions" in File Explorer to confirm the firmware is still in .bin or .hex format. Do not modify the file extension.

  1. Confirm the device has entered DFU flashing mode according to the product tutorial, then connect it to the computer using a USB cable that supports data transfer.
  2. Open STM32CubeProgrammer, select USB mode, refresh the device list, and connect.
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  1. If no error popup appears, the connection is successful.
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  1. Click the download icon on the left side, and check the flashing options as shown in the image below.
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  1. Click Browse and select the firmware to be flashed.
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  1. When flashing .bin firmware, set Start address to 0x08000000. When using .hex firmware, keep the address embedded in the file.
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  1. Click Start automatic mode to begin flashing.
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  1. When the success message appears, the firmware flashing is complete.
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Note

Do not disconnect the Type-C connection during the flashing process, otherwise the flashing may fail.

Next Steps​

After the complete firmware flashing is finished, the device supports updating the main firmware directly through the web tool, without the need to enter DFU mode again.

Please refer to the Firmware Update document to complete the main firmware update.

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