Unable to write to microcontroller with stlink-v3minie

[baby_chicken]

When I try to write to stm32h742vgt6 using stlink-v3minie, Target is not responding, retrying... and cannot write.

The same microcontroller can be written to the board on which it is mounted. In the same program.

What are the possible outcomes in this case?
Is it just a bad solder or something else, or can you give me a few possibilities?
Thank you in advance.

 

symptoms↓

Failed to reset target.

Target is not responding, retrying...

Waiting for debugger connection...

Debugger connected

Waiting for debugger connection...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Target is not responding, retrying...

Shutting down...

Exit.

 

[Andrew Neil]

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@baby_chicken wrote:

When I try to write to stm32h742vgt6 using stlink-v3minie,

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Show your connections.

 

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@baby_chicken wrote:

The same microcontroller can be written to the board on which it is mounted.

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What do you mean by that?

What board is it?

https://community.st.com/t5/community-guidelines/how-to-write-your-question-to-maximize-your-chances-to-find-a/ta-p/575228

[baby_chicken]

This is a home-made board using stm32h742vgt6.
It is not NUCLEO etc.
Best regards.

[Andrew Neil]

Show the schematic of the board.

What do you mean by, "The same microcontroller can be written to the board on which it is mounted" ?