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July 29, 2026
Question

STM32 NUCLEO-N657X0-Q won't connect (and I can't upload code)

  • July 29, 2026
  • 1 reply
  • 42 views

Despite my best efforts I cannot manage to connect my board to my PC and upload code (doing so from the Programmer). The environment consists of all three Cube applications (MX, IDE, Programmer) all at the latest version. Hardware wise, the board's jumpers are correctly placed for code upload, with the ST-LINK led turned on, as well as LED4 and LED9. There's also another blinking red led. I have tried all of the possible configurations (changing the frequency, mode, etc) and nothing seems to be working. The target voltage shows 3.3V, the programmer also can firmware upgrade the board, however I simply cannot connect to it. Please help!

1 reply

Amine_Jridi
ST Technical Moderator
August 17, 2026

Hello ​@petru2006,

Could you please share the boot configuration you are using in order to connect with STM32CubeProgrammer (Boot0 & Boot1).

Also, what interfaces are you using for connection (STLINK, USB, ...)? 

 

Thanks,

Amine.

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