Portenta H7 dfu-util issue

Hello,
I’m not able to use the portenta H7 on my MacOS , I get the following error :slight_smile:

/Applications/OpenMV IDE.app/Contents/Resources/dfu-util/osx/dfu-util -w -d ,2341:035b -a 0 -s 0x08020000 -D /private/var/folders/19/sm7cb6kx1v76mnlzj76v4q4w0000gn/T/OpenMVIDE.F14758

dfu-util: Invalid DFU suffix signature dfu-util: A valid DFU suffix will be required in a future dfu-util release!!!

dfu-util 0.9

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.

Copyright 2010-2020 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/

Waiting for device, exit with ctrl-C

If I enter the portenta bootloader mode OpenMV crashes.

Thanks for your support

Does the Portenta show up as a USB device in the operating system? The issue is with DFU-Util not finding the device…

There’s not much I can do if DFU-Util doesn’t find the device. Can you cd to “/Applications/OpenMV IDE.app/Contents/Resources/dfu-util/osx/dfu-util” and try to run dfu-util yourself using the the above arguments in bootloader mode? If you get stuck with the same issue then I’m not sure what to do.

The Portenta does show up on the operating system. I have tried running the dfu-util in the directory and first I got a similar message. Then changing the usb cable it seems to work.