Firmware Flashing Instructions

How to Determine Which Firmware You Need

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Note: Since the C5 is an integrated mainboard with both upper and lower computers, you must select the USB firmware unless using a CAN tool board!
When using a CAN tool board, you must select the CAN bridge firmware.

USB Firmware
- Advantages: The most common connection method in 3D printers, offering reliable and stable communication.
- Disadvantages: Multiple USB devices may affect data transmission.
CAN Bridge Firmware
- Advantages: Allows connecting multiple devices simultaneously without occupying a USB port. Use this firmware only when using a CAN tool board.
- Disadvantages: The initial firmware compilation and flashing process can be more complex.

The FLY C5 uses a DIP switch to select the connection method between the upper and lower computers. Incorrect DIP switch settings will prevent the upper computer from connecting to the lower computer. Please pay close attention!

Important

For normal use, set the DIP switch to the "UP" position.
When adjusting the switch, push it all the way UP, otherwise the lower computer may fail to connect!!!