#217 Arduino: No DFU capable USB device available

[ali ugurlu]

dWarning: Invalid DFU suffix signature
A valid DFU suffix will be required in a future dfu-util release
No DFU capable USB device available
fu-util 0.10-dev

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2021 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

Failed uploading: uploading error: exit status 74

[Tormod Volden]

No DFU capable USB device available

Without more information there is not much we can do about it.

[Tormod Volden]

Cannot open DFU device 2341:0366 found on devnum 34 (LIBUSB_ERROR_NOT_FOUND)

This means the device shortly showed up, but then disappeared before dfu-util could connect.

[Kauri Halttunen]

I have the same problem. Using system information on macOS to see USB device details, this board used to work with USB device name "Nano ESP32" and manufacturer "Arduino". Now I get an error and it has the name "USB JTAG/serial debug unit" and manufacturer "Espressif". Below is the output while trying to upload using the Arduino IDE:

Sketch uses 690741 bytes (21%) of program storage space. Maximum is 3145728 bytes.
Global variables use 55048 bytes (16%) of dynamic memory, leaving 272632 bytes for local variables. Maximum is 327680 bytes.
dfu-util 0.11-arduino4

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2021 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

dfu-util: No DFU capable USB device available
Failed uploading: uploading error: exit status 74

[Anonymous]

I'm using an Arduino UNO R3. My IDE is version 2.3.6. I selected Arduino UNO Minima from the Tools menu and connected via port com4.
When I try to compile and upload the attached file, the upload fails.
The following error message appears:
No DFU capable USB device available
Failed uploading: uploading error: exit status 74
How can I upload it?
I was able to upload and it worked before I updated the IDE.

[Tormod Volden]

All Arduino users: Please first go here: https://support.arduino.cc/hc/en-us/articles/11011849739804-dfu-util-errors-when-uploading-exit-status-74