I cannot connect the circuit to the PC

Please confirm the green light on the circuit is ON
Please confirm that you can see a new COM port appear in the RCbenchmark GUI when you connect the USB cable to the computer.
Please confirm you use the correct version of the firmware for your board. You can flash the firmware at “Setup” -> “Firmware Upgrade” section. Please select the product you are using now in the drop-down menu then click “Flash Firmware vx.xx” to upgrade the firmware on your board.

If the red LED is flashing when you power up the circuit, please send us a screenshot of the “Debug” page on the RCbenchmark GUI. The debug page can be activated in Setup -> GUI Setting -> Activate debug mode.

Please check the components on the circuit. If you find some damaged components, please take a picture and send it to us, support@tytorobotics.com, for further troubleshooting.