Development tools for Zephyr on STM32Workbench for Zephyr: VS Code extension to set up, build, flash and debug Zephyr applications on STM32.Devicetree manager: browse, edit and visualize Zephyr devicetree, STM32CubeMX-like for Zephyr.
On Linux it installs to $HOME/.ac6/SW4STM32/firmwares/. I suggest checking c:\Users\\ to see if there is something there. You might have to do whatever is needed to reveal hidden files. At worst, search your drive for SW4STM32.