Cannot update firmware on Nucleo f103rb board

[FARAWAY]

Hi all, 

I got trouble with updating firmware on Nucleo f103rb board (ST-Link/V2)

 

I used STM32CubeProgrammer to update firmware. 

 

First of all, I checked connection between PC and board by clicking the green "Connect" Button, and the connection was good.(ST_LINK configuration section showed serial number) 

 

Then I click Firmware upgrade Button and clicked "Open in update mode" in ST Link UPgrade tool.

 

Every time I click "Open in update mode" to update firmware, the tool says "Device [mydeviceNo] not found, No device connected."

 

And LD1(on Red LED the board) starts blinking.

LD1 was not blinked Before Open in update mode. (The red light was just ON without blinking) 

 

Please Help me with this problem..

 

[FARAWAY]

Never Mind,, I found why..

 

Board didn't work appropriately.