Just make a WIFI connection to the Tello from your PC. Turn on the Tello and go to your PC WIFI connection menu. Look for the Tello WIFI (TELLO-XXXXXX) and connect to it.
Downlad the exe version.
Turn on tello
Open network connections on pc and connect to your tello
Give it a minute then run the exe.
If any firewall popups appear, click allow.