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Visitor II
December 2, 2025
Question

ST-LINK Firmware Upgrade Fails in STM32CubeIDE (V1.15.0/V1.15.1?) - "ST-LINK is not in the DFU mode

  • December 2, 2025
  • 2 replies
  • 642 views

Hi everyone,

I'm encountering a critical issue when attempting to debug/flash my STM32 microcontroller using my ST-LINK debugger in STM32CubeIDE.

The Initial Error: When I start a debug session, I receive the pop-up: ST-LINK firmware upgrade required. Please upgrade the ST-LINK firmware using the upgrade tool. error13.pngErrror17.png

2 replies

Peter BENSCH
Technical Moderator
December 2, 2025

Welcome @Prathik, to the community!

can you please insert a good photo of your ST-LINK, in case of an ST-LINK/V2 also from the back?

Regards
/Peter

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padawan
Senior
December 2, 2025

What happen if you click on "Open in update mode"?

this turns teh ST-link into to the right mode.

padawan