Notice

• D7 has pre-flashed Katapult firmware by September 1, 2024.
• If this is your first time viewing this document, you need to manually flash BL before flashing the firmware.
• Flash BL
• You do not need to flash BL again if it has been flashed once.
• The BL of D7 is Katapult firmware.

Firmware Burning Instructions

Notice

• Board firmware burning needs to be done through Katapult to flash Klipper.
• If you are sure that the board already has Katapult flashed, you do not need to perform the final step of flashing the Katapult firmware; it is just a precaution in case the Katapult firmware on the board was not flashed successfully.
• You can quickly press the reset button twice to see if an LED on the board blinks, indicating that the board has entered Katapult firmware.

How to Determine Which Firmware You Need

tip

• Please note that you only need to flash one type of firmware.

• D7 can connect to the host computer using the following methods
• USB Firmware
  • Advantages: Reliable and stable communication.
  • Disadvantages: May affect data transmission if multiple USB devices are connected.
• USB Bridge Firmware
  • Advantages: Can connect multiple devices without occupying USB ports.
  • Disadvantages: May cause errors such as homing timeout when used with KlipperScreen.