I was able to convert my Austin-built 2023 Model Y Long Range that came with reflector headlights to Matrix LED with all functions working. It took about an hour to remove the frunk liner and front bumper and swap the headlights, then about 40 mins to put it all back together. Really not that difficult. I was left with headlights that were on all the time (if the car was on), but I had no control to turn them off, go to parking lights only, etc., and NO turn signal function. I tried the service menu reset--I did the software update and a reboot and after that I had zero headlight or turn function. The other thing that worked was a very dimly lit DRL.
I did a deep-dive on how to get them working, which led me to this thread as well as others where people have not had good luck getting the headlight firmware updated to have the Matrix work like the car came with them. I had an independent shop successfully change the configuration. All functions work as they should, and even the car's visualization is now updated with the new headlights.
Nice!! What was the total cost and was it worth it?