Little bit of both probably. Tesla has been lower their prices. They would be doing that if the demand was the same

If you can do a master reset and erase everything and start fresh. Sometimes the upgrade iOS doesn’t work right with your current stuff. I usually like to do a master reset when they release a new iOS. Everything runs smoother

I looked around and it seems like it is just a myth. The engine was pretty much designed by Toyota

Do you have a source on that? From what I understand it was built by Toyota with help from Yamaha