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+--- Thread: KC868-H32/H32W update firmware by ST-Link USB cable pin define (/showthread.php?tid=31)
KC868-H32/H32W update firmware by ST-Link USB cable pin define - admin - 11-10-2020
Here is CPU pin define for ST-Link usb cable to download firmwre.
How to download firmware by ST-link video: https://youtu.be/MI2_qAIEt2U