This video reviews how to use the flashing tools that are included with the openSYDE package for updating STW controllers.
These tools include SYDEflash, SYDEsup, and osy_cmd_line_flash_tool.
https://drive.google.com/file/d/1RTLxhRt2DM8FhE0jzIFrrD4V_RnzxOCE/view?usp=sharing