Plus the cost of the latest FSD computer upgrade, even if Elon Musk promised your old model "has all the required hardware for Level 5 autonomy". Your fault for believing him, pay up.
* Isn't actually Full Self Driving
I've had a Model 3 for 3 years with FSD. My experience:
Autopark - trying to get it to show up is almost impossible. When it does show up, the chance of curb rash is between 95-99%.
Summon - for the most part works if it can connect. still does some sketchy stuff some times.
Smart Summon - literal piece of shit that will always do the wrong thing and then just stop in the middle of the road.
Navigate on Autopilot - kind of works, but it makes the auto-lane change feature finicky. Without NOA, auto lane change works fine, with it enabled, fails 80% of the time with the car jerking back into the original lane.
Can't wait for FSD though /s