Recommended · for some experience
Blue-pill STM32 Programming Using ST-LINK V2 Dongle
Why people recommend it
Offered as a practical walkthrough for loading a hex file onto a bare STM32 chip over SWD with an external ST-Link programmer.
Watch for: Covers generic STM32 parts rather than Nucleo-specific tools
In their words
There might be a better way using the Nucleo development tools, but this video shows how to upload a hex file to a generic STM32 mcu using SWD and a STLink programmer:
ErikR on electronics.stackexchange.com, May 2021. CC BY-SA.
