How To update firmware on CNC controllers myCNC-ET3

WARNING: Unlike updating the myCNC software, the firmware CANNOT be downgraded after a reflash. The myCNC team recommends reflashing the control board firmware as a last resort only, and recommends seeking an explicit confirmation from the support team that the firmware reflash is warranted in order to avoid issues.

  To update firmware:

  1. Host PC should be connected to the Internet.
  2. Power up the board (+24V DC power supply) and connect with Host PC via USB.
  3. Close Jumpers J1 (Reset) & J2 on the board.

  4. Head to Settings > Support:
  5. In the Firmware Update section, set "Select board” to “myCNC-ET3”
  6. Select “Firmware version” from “Release”, “Night build” or “Testing” (“Release” is recommended)
  7. “UART port” select port with FT232 attached
  8. Baud Rate set to “115200” for ET1; other baudrate can be selected in case of problems on 115200 speed
  9. Press “Update Firmware” button, Firmware download and reflashing process will be started

    After the process is finished you may open  J2 jumper and restart (power off, wait 2 seconds, power on) the board.