NUCLEO-F401RE: Failed to upgrade ST-Link firmware (various error)

[LittleLogic]

Good day, I just brought a NUCLEO-STM32F404RE, I have trial several ways to upgrade the firmware but to no avail. 
Here are my board Info: 
ST-LINK SN : 0669FF373154333143092538
ST-LINK FW : V2J33M25
Board : NUCLEO-F401RE

Here are all the posts and advices that I followed. This including:
- Reinstalled the lastest STM32CubeProgrammer and try the ST-LinkUpgrade

- Uninstall and Reinstall all the driver to the lastest version 

- Manually download the newest STLinkUpgrade 3.15.6

- Seperate the ST-Link with the Board by disconnected the CN2 pins and try using STLinkUpgrade alone.

- Use direct USB connection. 

 

If there are anything else I could try, please tell and thank you for any suggestion

 

 

[LittleLogic]

Update

Right after posting this, it suddenly work for me, all I did was pressed connected and disconnected 3 times, before pressed firmware update in STM32CubeProgrammer. I honestly don't know why, but hopefully this could help other who has the same problem. :thinking_face: 

P/S: My USB cable is around 2.5m long, could it be the issue ?