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Associate
March 9, 2025
Solved

STM32U599VJ board, Jlink, STM32 cubeIDE with custom stldr file

  • March 9, 2025
  • 3 replies
  • 440 views

We have a custom stldr file that we generate to program external flash on our board with STM32U599VJ MCU, we use STM32 CUBE IDE with Jlink. How do I point the IDE to use my stldr file when loading code to onchip and external flash? The option to point to an external loader stldr appears on my if the debug configuration is chosen with STLink, not for Jlink. 

 

Thanks

Sansh 

Best answer by KDJEM.1

Hello @Sansh,

 

This behavior is already reported internally.

I will come back to you for more details as soon as possible.

Internal ticket number: 205039 (This is an internal tracking number and is not accessible or usable by customers).

 

Thank you.

Kaouthar

3 replies

KDJEM.1
KDJEM.1Best answer
Technical Moderator
March 12, 2025

Hello @Sansh,

 

This behavior is already reported internally.

I will come back to you for more details as soon as possible.

Internal ticket number: 205039 (This is an internal tracking number and is not accessible or usable by customers).

 

Thank you.

Kaouthar

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
SaschaK
Associate II
April 19, 2026

Is there any progress on this matter? I have the same issue, would like to use Segger J-Link through CubeIDE but cannot find a way to point it to the external loader. When using the CubeProgrammer I can select my stldr file and successfully flash my custom boards external OSPI flash, but I have not found a way to point CubeIDE int the right direction.

KDJEM.1
Technical Moderator
April 20, 2026

Hello @SaschaK ,

 

The requested feature is not supported with STM32CubeIDE for J-Link probes.
However, since J-Link probe is supported with STM32CubePtrogrammer, you can flash the external memory using J-Link with CLI if you configure it as an External Tool.

The in the Debug configuration you only load the symbols.

 

Thank you.

Kaouthar

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.