Device Firmware Upgrade via USB.

Requirements:

  • ESP32-S2 or an ESP32-S3 chip

  • You will need to do some electrical connection work. Here is a guide for the S2 board

  • The chip needs to be in bootloader mode for it to be detected as a DFU device. This can be achieved by pressing the “reset” button, while holding the “boot” button pressed

  • For Windows only: You have to register on Windows the device with the WinUSB driver.

Note

The drivers can be installed by the Zadig tool. Please make sure that the device is in download mode before you run the tool and that it detects the ESP32-S2 device before you install the drivers. The Zadig tool might detect several USB interfaces of ESP32-S2. Please install the WinUSB driver only for the interface where there is no driver installed (probably it is Interface 2) and do not re-install the driver for the other interface.

Flashing:

  1. Select a device target which is DFU compatible (ESP32-S2/ ESP32-S3)

../_images/select_device.png

  1. Select DFU as flashing method

../_images/flash_method.png

  1. Build the project

../_images/build_project.png

  1. Flash

../_images/flash.png