I'm considering replacing my 2015 MS with a late 2017/early 2018 soon. I seems most used MS's from Tesla come with FSD. Most of the cars I look at have the AP2.5 computer (APH3) listed in the option codes. Does anyone know if Tesla will upgrade the computer to the AP3 hardware? Since I'll likely end up with an MCU1 car, it seems like it would be worth the $1500 to upgrade to MCU2 if they'll update the AP hardware too.