Hello everyone. This trying to program some STM32F427 VIT6 through DFU but USB Windows does not recognize the Board (tried different cables and computers). I have also tried to program it using ST-Link Programmer, message "Revision ID: Unknown".Some help?

[CJime.1]

[TDK]

Try STM32CubeProgrammer. Can you do a full chip erase? If not, post error message.

The chip needs to be in bootloader mode to respond on USB DFU. Hold BOOT0 high during reset.

[CJime.1]

Thanks you very much for your response.

I will do it.

[CJime.1]

Thanks again...

[CJime.1]

This is the second time it has happened to me. Some people talk about "Fake Chips". How to know if my STM32 Chips are Fake?

[TDK]

Primarily, buy them from reputable sources.

[MM..1]

Primary your foto with red arrow isnt DFU

2.colors wires isnt right, i have similar proggramer and GND pin is middle

3.use SWD connected utility and check your chip normal way

[CJime.1]

Red arrow shows ST-Link Programmer for SWD mode.

DFU mode needs Micro USB wire and enter in DFU mode.

I will do it again in SWD checking all wires.

Do you want to tell me that mi ST-Link programmer has the wires position changed?

GND in my ST-Link is for PINS 3 and 4

Greetings.

[CJime.1]

It's true...

In my ST-Link (Purple colour), Pins for GND are 3 and 4.

However, all's ST-Link V2 Photos that i can see in internet, pins for GND are 5 and 6.