tip

• Micro4 uses Katapult for firmware burning via USB connection by default

Firmware Burning Instructions

Notes

• The mainboard firmware burning needs to be done through Katapult to burn Klipper
• If you are sure the mainboard has already been burned with Katapult, there is no need to burn the Katapult firmware at the end
• You can quickly press the reset button twice and see if an LED lights up on the mainboard. If it does, it means the mainboard has entered the Katapult firmware

How to determine which firmware you need

tip

• Please note that you only need to burn one of the firmwares

• You can connect to the host computer using the following methods
• USB Firmware
  • Advantages: Reliable and stable communication
  • Disadvantages: May affect data transmission if there are multiple USB devices
• USB Bridge Firmware
  • Advantages: Can connect multiple devices and does not occupy the USB port
  • Disadvantages: May cause errors such as homing timeout when used together with KlipperScreen.