EV3 Mindstorms Firmware download
Click DOWNLOAD to get the EV3 Firmware onto your computer.
Open your LEGO MINDSTORMS EV3 Home Edition Software and go to Tools and click Firmware Update.
Click Browse and navigate to the folder containing the EV3 Firmware you have just downloaded. Select the file and click open.
Connect your EV3 Brick to your computer, turn the EV3 Brick on and then click Download on the Firmware Update window.