I bought mine used, so I didn’t really have the option to upgrade anything but the tires. The head unit has some pretty bad pressure cracking in the screen, so really it would be a full replace regardless. I used a open sourced hack at one point to add AA to the default software, which worked for a while, but I started having issues with it freezing and hard-resetting while I was driving and using google maps on it, so I had to take it off (i think AA made an update that broke the hack)