UM1486

Device upgrade procedure (DFU)

Doc ID 022415 Rev 1

7/12

3.2

Firmware upgrade

1.

While keeping button 1 on the board (Figure 2, item 1) pressed, connect the device to a

spare USB port on your PC. LED 1, 2 and 3 (Figure 2, item 2) will switch ON to signal

that the microcontroller has entered DFU mode.

2.

Open the Device Manager, and go to “Other devices”. Right click on the “STM32 DFU”

item (Figure 3) and select “Update Driver...”. Use the drivers located in the “C:\Program

Files\STMicroelectronics\Software\DfuSe\Driver” folder.

3.

The driver is now correctly installed (Figure 4).

4.

Run the “DfuSe demonstration” application (Start -> All Programs ->

STMicroelectronics -> DfuSe -> DfuSe Demonstration or

C:\Program Files\STMicroelectronics\Software\DfuSe\BIN\DfuSeDemo.exe). The

STEVAL-MKI119V1 is recognized in DFU mode (Figure 1, item 4).

5.

Click the “Choose” button (Figure 1, item 1) to select the DFU file provided with the

package in the Firmware directory. The displayed information, such as VID, PID,

Version and target number is read from the DFU file.

6.

Click the “Upgrade” button (Figure 1, item 2) to start upgrading file content to the

memory.

7.

Click the “Verify” button (Figure 1, item 3) to verify that the data was successfully

downloaded.

8.

Click the “Leave DFU mode” button (Figure 1, item 5) or disconnect the board.

The firmware is now updated and the board ready to be used.

Figure 2.

STEVAL-MKI119V1