rusefi_documentation/HOWTO/HOWTO-Update-Firmware.md

Download the rusEFI bundle for your hardware.

Windows:

Launch rusEFI Console. You can find it in the bundle you downloaded, in the "console" folder.

Click the "Update Firmware" button.

Linux:

The canonical way to update the firmware on Linux is with DFU.

You will need dfu-util:

# Debian/Ubuntu
sudo apt install dfu-util
# Arch/Manjaro
sudo pacman -Syu dfu-util

Once you have dfu-util, you can run this from the extracted bundle directory:

java -jar console/rusefi_console.jar reboot_dfu

dfu-util -a 0 -D rusefi.dfu

More Information

For more about DFU see HOWTO-DFU

ST-LINK is an advanced mode of firmware update which requires ST-LINK device, either external, or built-in like on Discovery/Nucleo board.