ESP32 Forum

Posted: **Mon Jan 16, 2023 6:54 am**

hello,
I'm trying to load the default Hello_world example from esp-idf into a WEMOS LOLIN S2 mini board.
The device is connected and put into DFU mode.

Code: Select all

E:\_esp-idf\hello_world>idf.py  --version
ESP-IDF v5.0
E:\_esp-idf\hello_world>idf.py build
E:\_esp-idf\hello_world>idf.py dfu 
E:\_esp-idf\hello_world>idf.py dfu-flash

The last command prints an error:

Code: Select all

E:\_esp-idf\hello_world>idf.py dfu-flash
Command list: dfu-util;-d;303a:2;-D;E:/Documents/Arduino/_esp-idf/hello_world/build/dfu.bin
dfu-util 0.9
Cannot open DFU device 303a:0002
No DFU capable USB device available
CMake Error at E:/Espressif/frameworks/esp-idf-v5.0/tools/cmake/run_dfu_util.cmake:27 (message):
  dfu-util failed

The dfu-list command also throws an error:

Code: Select all

E:\_esp-idf\hello_world>idf.py dfu-list
Cannot open DFU device 303a:0002
Done

Please tell me how to get esp-idf to work properly.
Thank you!

ESP32 Forum

esp-idf Cannot open DFU device WEMOS LOLIN S2 mini

esp-idf Cannot open DFU device WEMOS LOLIN S2 mini