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GS2
Senior
Jul 31, 2025 8:38 PM UTC
Solved

STLINK V3 stopped working after upgrade

STLINK V3 stopped working after upgrade. Red light is flashing. Device manager - Unknown USB Device. NUCLO and DISCOVERY with ST-Link2 are still working! Installing dpinst_amd64.exe not help.

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GS2Best answer
Senior
Jul 31, 2025 9:26 PM UTC

Thanks, I have already removed USB hub. Yes, I replace the cable and it is working now.

Thank you very much. How can upgrade brake the cable?!

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5 replies

TDK
TDK
Jul 31, 2025 9:12 PM UTC

If red light is flashing, it indicates enumeration is failing. Try a different cable or adding/removing a USB hub from the chain.

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GS2AuthorBest answer
Senior
Jul 31, 2025 9:26 PM UTC

Thanks, I have already removed USB hub. Yes, I replace the cable and it is working now.

Thank you very much. How can upgrade brake the cable?!

    Tesla DeLorean
    Tesla DeLorean
    Guru
    Jul 31, 2025 10:02 PM UTC

    Operates at a faster rate, say 480 Mbps vs 12 Mbps, and then the cable quality/performance becomes much more of an issue..

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