ST link V2 is not working after updating the firmware

DDS · ‎2025-07-19

Hi,

I am using the ST link V2 debugger and i have updated the firmware using stm32 programmer software and used the stsw-link009 and when i tried connecting it shows me some below errors. After updating the firmware it worked for few moments and then it suddenly stopped.

Thank You

Deekshitha.

Andrew Neil · ‎2025-07-19

Your target has no power:

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

Tesla DeLorean · ‎2025-07-19

Check Pin 1 or 2 of the 20-pin JTAG Header, the board you're connecting too should present 3.3V, check your ground connections also.

Show the setup here, what's connected to what?

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