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Associate
October 13, 2026
Question

I got error when I'm using the STM32CubeProgrammer with MCU of STM32N657

hi guys 

 

I need to put a F/W program on my board that my coworker made 

but there’s a problem with CN6 so I have to use TAG

and I can’t use USE port for power so I can use only VIN 

 

when I was using the STM32CubeProgrammer then I got this error 

I changed mode, reset mode and frequency but it couldn’t help 

Does any body know to solve this problem? please let me know 

2 replies

MOBEJ
ST Employee
October 13, 2026

Hello ​@sujeong , 

Please also check the STM32CubeN6 Template README, and read the README provided with your own STM32CUBEn-  project (STM32CubeN6/Projects at main · STMicroelectronics/STM32CubeN6) . They explain the expected STM32CubeProgrammer steps and how to adapt them to your project and board.

Br

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EXUE.2
ST Employee
October 15, 2026

Hi, your description is not very clear, so 1. which board are you used? MB1939? 2. if you power the board by VIN and connect a external debugger with CN10? 3. what is the BOOT switch position of SW1 and SW2 in your board? you can change it and try again.