Connect your ESP32 board via USB and click the button below.
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Serial access blocked. Must serve over HTTPS or localhost.
Plug your ESP32 board into your computer with a USB data cable.
Choose the latest firmware version from the dropdown.
Click the button and select your ESP32 from the list.
Wait ~30s. Controller is ready when OLED shows "Chocotone".
Use a data cable, not charge-only. Try another USB port. Windows users: install CP210x drivers.
Hold the BOOT button on your ESP32 while clicking "Install". Release after "Erasing" appears.
Close Arduino IDE or other serial monitors. Unplug/replug the ESP32 and try again.