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tip
  • Micro4 defaults to using the Katapult with USB connection method for firmware burning.

Firmware Burning Instructions

Notice
  • Mainboard firmware burning needs to be done through Katapult to burn Klipper.
  • If it is confirmed that the mainboard has already been burned with Katapult, there is no need to perform the final Katapult firmware burning, as that is only a precaution in case the Katapult firmware burning was not successful.
  • You can quickly press reset twice and check if a LED on the mainboard blinks. If there is one, it indicates that the mainboard has entered the Katapult firmware.

How to Determine Which Firmware You Need​

tip
  • Please note that you only need to flash one of the firmwares.
  • E3 V2 can use the following methods to connect to the host machine
  • USB Firmware
    • Advantage: Reliable and stable communication
    • Disadvantage: Data transmission may be affected if multiple USB devices are present
  • USB Bridge Firmware
    • Advantage: Can connect multiple devices without occupying USB ports
    • Disadvantage: May cause issues such as homing timeout when used with KlipperScreen.