Online Flasher

The online flasher tool allows you to flash firmware to your ESP32 device directly from the browser, without installing any development environment.

Prerequisites

  • Chrome or Edge browser installed (Web Serial API support required)

  • ESP32 device connected to your computer via USB

  • Serial port device recognized in Device Manager

Note

If the device is not found in Device Manager, try using a different USB port.

../_images/olf1.png

Flashing Steps

  1. Open the online flasher: LAFVIN Web Flasher

    ../_images/olf2.png

  2. Select your kit or device model.

    ../_images/olf3.png

  3. Select the firmware to flash.

    ../_images/olf4.png

  4. Select the firmware version.

    ../_images/olf5.png

  5. Click Connect. A serial port selection window will pop up in the upper-left corner of the browser (grant permission if prompted). Select your device and click connect. Once connected, the button will change to Disconnect.

    ../_images/olf6.png ../_images/olf7.png

  6. Select the Flash Baud Rate and whether to enable Erase Flash (recommended for first-time flashing). Once confirmed, click Flash. The tool will automatically erase and write the selected firmware.

    ../_images/olf8.png

Note

The Flash erase process may take a while. Please be patient.