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Chapter 5
Maintenance and service
5.1 Firmware update
In order to optimize the system performance of EVO II Enterprise UAVs, Autel Robotics will
update relevant firmware when necessary. You can download a unified firmware upgrade package
on the official website, which contains the latest versions of various firmware such as flight
controller, gimbal, camera, smart battery and remote controller. When the system detects new
firmware version, Autel Explorer APP will open a prompt box after it is connected with the
aircraft to remind you to download and install the new version.
Important
Before firmware update, please ensure that:
The aircraft motor is not powered on.
The power levels of the aircraft and the remote controller are not lower than 25%.
The SD card has enough space to store firmware files.
Download and update firmware
1. Download the firmware upgrade package from the official website of Autel Robotics:
www.autelrobotics.cn/download/8
2. Insert SD card into your computer, save the downloaded firmware package under the root
directory of SD card, and then remove the SD card from the computer.
3. Turn on your remote controller and aircraft.
4. Insert SD card into the aircraft for automatic update. User can view the upgrade process on
the flight information panel.
5. Restart the remote controller and the aircraft after update.
Important
The update takes about 15 minutes. During the update process, do not turn off the aircraft or
remote controller, start the motor, or remove the SD card from the camera.
After the upgrade, the remote controller may be disconnected from the aircraft. Please refer
to Section 2.2.2 to pair them again.
5.2 Solutions to common faults
Q1. The aircraft displays a fault during the self-inspection (the tail LED indicator is
normally on red):
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