cancel
Showing results for 
Search instead for 
Did you mean: 

STEVAL-MKI109V3 DfuSe update issue, no available DFU Device

Chris0815
Associate II

Hello,

I installed the latest driver version Unico 8.0.0. Now my board is shown in the decive manager.

Ready to use.. Everything looks good.

Now I am trying to update the FW in the STEVAL-MKI109V3 board.

First I pressed the BT2 Button and pluged the USB into the Laptop(Win7 and Win10).

The blue LED (D6) is on, but there is no available DFU Device in the DfuSe Demo (v3.0.5).

I noticed that, when I unplug the device and replug it without pressing the BT2 button, the LED (D1) no longer blinking as it did before. As if I was stuck in DFU mode.

If I press the BT3 vor reset the LED (D1) is on for half a second.

does anyone have any idea what this could be or how I can update the FW?

Best regards,

Chris

1 ACCEPTED SOLUTION

Accepted Solutions
Chris0815
Associate II

Problem solved!

It was an Driver issue. The trick was that it wasn't the normal COM driver, but the bootloader, which is the driver used in DFU mode. This can only be seen in the device manager when the DFU mode is active. When I reinstalled this driver it worked fine.

Thanks to st Support!

View solution in original post

2 REPLIES 2
Chris0815
Associate II

0690X000008BX39QAG.jpgmaybe it will help.

Chris0815
Associate II

Problem solved!

It was an Driver issue. The trick was that it wasn't the normal COM driver, but the bootloader, which is the driver used in DFU mode. This can only be seen in the device manager when the DFU mode is active. When I reinstalled this driver it worked fine.

Thanks to st Support!