DFU

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DFU Device Firmware Upgrade =

To upgrade the firmware of the STM32 microcontroller on your Snickerdoodle, please consult

- a - b - c

Additionally, we'll provide a few tips here.


Win10 DfuSeDemo can not find the Snickerdoodle

If you follow the steps in the Firmware User Guide, yet the DfuSeDemo window does not seem to find the Snickerdoodle STM32...

First open up Window's Device Manager. You should see the STMicroelectronics Virtual COM port (COMxxxx) active. If you instead see "STM32 BOOTLOADER" or even "STM32 BOOTLOADER" with a caution symbol, you might not have proper device drivers installed on Windows.

Right click on the STM32 BOOTLOADER icon and select "Properties". If the new window's Driver tab indicates that the driver is not found or not correct, this is probably your problem.

Assuming that you have installed DfuSe, you probably have a DfuSe installation directory at a location like "C:\Program Files (x86)\STMicroelectronics\Software\DfuSe v3.0.6" .

To resolve this, you will need to tell Windows to "Update Drivers" and then "Browse my computer for drivers". When asked where to search, specify the location of the installation (probably "C:\Program Files (x86)\STMicroelectronics\" will work).c