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How to update firmware (MK4/S, MK3.9/S, MK3.5/S, XL)

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Last updated 18 days ago
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CSPLDEESITFRJA

On printers with the xLCD with a USB drive connector, the firmware is flashed using a USB flash drive.

  1. Download the latest firmware for your printer and extract it (zip file) on your computer
  2. Make sure the USB flash drive doesn't contain any previous firmware (.bbf file)
  3. Copy the new .bbf file to the root directory of a USB flash drive (Not within a folder).
  4. Insert the USB flash drive and push the reset button. The bootloader will automatically compare the installed version with the one on the drive and, if newer, will automatically offer you to flash it.
  5. Confirm the update by selecting the "FLASH" button and pressing the knob. 

If you need to downgrade the firmware or re-flash the same firmware, follow this guide: How to downgrade firmware.

Factory Reset

If you do a hard Factory Reset, the firmware that is in the USB will also be installed in the printer, so this can be used as a way to update the firmware.

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