Be careful, the Tello can overheat even during the firmware upgrade process!! I did a test flight after the update, and the Tello shut off MID-AIR (!!!!!) because of overheating!!! Fell down the floor from 1m height...
Yes, indeed. @kovbenc is right. I also saw that it gets overheated during the firmware upgrade.
I am using the drone for almost 2 months so far and no overheating issues (except the one during the upgrade) happened.
The best way to prevent it from overheating is to pull and hold the flight sticks to 4 o'clock-left stick and 7 o'clock-right stick and turn on the motors while on the ground.
This way it will cool itself down while you are doing an update or just arrange your settings
Would you pls start a seperate thread after searching the forum for possible answers instead of hijacking other threads with completely unrelated questions?
This thread here is about overheating at rest - this has nothing to do with the VPS sensors on the bottom or changing Tello motors.....