The tools menu is used to load firmware into the attached device using a bootstrap loader. This type of load is used if there is no firmware running in the device or there is firmware but it is version 2.x or lower. If firmware for version 3.x or higher is already running in the attached device then use the Device > Load Firmware menu instead.
On the Tools > Bootstrap Load menu item the PC COM port connected to the device COM0 port must be chosen from the drop-down list. Then click 'ok' to start the firmware loading process. Progress will be displayed in the status bar. If you want to stop the loading then click the 'cancel' button at any time.