#170 Invalid DFU suffix signature on Arduino Giga R1

[Tuxmobile]

Hi,
I'm using Arduino Giga R1 and Arduino IDE 1.18.9 on a UBUNTU 22.04.2. I'm trying to download a sketch (from examples like "WifiWebClient.ino") during uploading the sketch I get this error:
"dfu-util: Warning: Invalid DFU suffix signature" (see attached file_1) I checked if dfu-util is running on my machine with command dfu-util -l (see attached file_2) works but cannot connect to the usb port

Anyone can help me ? need to configure something on linux-side?
Thanks a lot

[Tuxmobile]

second attached file

[Tormod Volden]

Warning: Invalid DFU suffix signature is just a warning, and is probably not related to any error. You can contact the Arduino IDE developers and ask them to include a valid DFU suffix in the firmware file that is passed to dfu-util.

For issues with dfu-util, please see instructions at https://sourceforge.net/p/dfu-util/tickets/new/