Final answer:
It is not necessary to download the VEXnet joystick firmware every time its batteries are changed; the statement is false. Firmware updates are only required for bug fixes or new features, not routine battery replacements.
Step-by-step explanation:
The statement "The VEXnet joystick firmware should be downloaded whenever you change its batteries" is false. Firmware is a specific class of computer software that provides low-level control for a device's specific hardware. The firmware for a VEXnet joystick, which is a type of controller used in robotics, typically does not need to be reinstalled or downloaded again simply because the batteries are changed. Firmware updates are only needed when there is a need to fix bugs or add new features to the hardware. Normally, the joystick retains its firmware unless a hard reset or a firmware update process is initiated by the user.