User Manual

How do I replace propellers?
You can replace propellers by manually by detaching the old ones and mounting new ones.
How can I differentiate clockwise (CW) and counterclockwise (CCW)
propellers? Do I have to mount different propellers in specific
places?
Tello's propellers and motor casings are marked for differentiation. CW and CCW propellers
must only be attached to CW and CCW motors, respectively. CW propellers have notches
near where they attach to the motors, and CW motor casings are also marked with notches.
CCW propellers and motors both do not have notches.
Updating Firmware
How can I update my Tello's firmware?
You can update Tello's firmware via the Tello app.
What should I do the update is interrupted or fails?
If the update fails, reconnect your Tello to the Tello app and try again.
Can I update my Tello on a computer?
Not at this time.
Accessories