tip

• Micro4 defaults to using Katapult with USB connection for firmware burning

Firmware Burning Instructions

Notice

• Motherboard firmware burning requires flashing Klipper through Katapult
• If you are sure that the motherboard has already flashed Katapult, you do not need to perform the last step of flashing the Katapult firmware; it is just a precaution in case the Katapult firmware was not successfully flashed on the motherboard
• You can quickly press the reset button twice and check if an LED on the motherboard blinks; if it does, it indicates that the motherboard has entered the Katapult firmware

How to Determine Which Firmware You Need

tip

• Note that you only need to flash one type of firmware

• E3 V2 can use the following methods to connect to the host machine
• USB Firmware
  • Advantage: Reliable and stable communication
  • Disadvantage: May affect data transmission if multiple USB devices are connected
• USB Bridge Firmware
  • Advantage: Can connect multiple devices without occupying USB ports
  • Disadvantage: May cause timeout errors or other issues when used with KlipperScreen