I can't upload anything to my Portenta H7 and I've tried all of Arduino's troubleshooting

Official Hardware Portenta Family Portenta H7
1

I have the Arduino Portenta H7 plugged into my brand new Windows laptop.

I am using the "Arduino Mbed OS Portenta Boards" library version 4.1.1 running in the Arduino IDE v2.3.2.

I open up the IDE, compile/upload the base code, and then I get the following:

Warning: Invalid DFU suffix signature
A valid DFU suffix will be required in a future dfu-util release
Cannot open DFU device 2341:035b found on devnum 20 (LIBUSB_ERROR_NOT_FOUND)
No DFU capable USB device available
Failed uploading: uploading error: exit status 74

I have tried EACH of the troubleshooting recommendations here:

None of these worked for me.

What am I doing wrong??

2

Can't tell from your post if this is your first attempt or everything has been working just fine and this just started happening (we need details). I'm assuming you are trying to download the Blink sketch and have it connected to the correct port. Did you double click the button to put it in DFU mode before downloading your program (though the Arduino IDE should do this for you).

What is your RGB LED doing? Do you have a solid red battery charger LED (the one on the left when USB is at top)? Is the COM port active (not greyed out)?

1 Like
3

Hi, is the device getting recognized on the device manager?

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4

For reasons unknown, I did not have the proper read/write access to my Arduino15 folder after installation. Once I reinstalled the application, I was able to upload programs just fine. Thank you!