User Manual

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Trouble-
shooTing
NOTE:
Updating firmware will
delete all existing files and
projects in theEV3
Brick memory!
Firmware is the software that is inside the EV3 Brick. Without its
firmware, the EV3 Brick will not work. Occasionally, the LEGO Group
may release new versions of the firmware that add enhanced
functions or fix software bugs.
To update the firmware, you need a USB connection from your
computer to your EV3 Brick. Your computer must also be connected
to the Internet.
 Turn your EV3 Brick on and connect it to your computer.
 Select Firmware Update in the Tools menu.
 Click the Check button to see if new firmware updates are
available.
 Select the most recent firmware version from the Available
firmware files.
 If you want to use a firmware version located on your computer
instead, use the Browse button to find and select the correct
firmware file.
 Click the Download button to download the new firmware to
your EV3 Brick. The progress bars at the bottom of theFirmware
Update dialog box will show you how the firmware update is
proceeding. Once complete, your EV3 Brick will restart itself.
If for some reason your EV3 Brick stops working during the firmware
update process, you will need to manually update the firmware by
doing the following (the EV3 Brick still needs a USB connection to
your computer):
 Hold down the Back, Center, and Right buttons on the EV3 Brick.
 When the EV3 Brick restarts, release the Back button.
 When the screen says “Updating,” release the Center and Right
buttons and click the Download button in the Firmware Update
tool. The firmware will be downloaded to your EV3 Brick, which
will restart itself.
If the manual firmware update does not make your EV3 Brick work
the first time, repeat the manual update process.
Firmware Update
Firmware Update tool
NOTE:
Check your EV3 Brick
batteries before repeating
manual firmware updates.
The problem may simply
be due to worn-down
batteries!