I got my S90D 3 weeks before AP2 came out, and I was told it was not backwards compatible. At the time, it was said that this upgrade was required for FSD. I

I got my S90D 3 weeks before AP2 came out, and I was told it was not backwards compatible. At the time, it was said that this upgrade was required for FSD. I swapped in October to a 3PE, now I'm seeing that another upgrade is incoming, and that THIS one is required for FSD. I've spent plenty of money with this company, but handing over $5,000 more dollars for a feature that is unproven is not something I feel like I should need to do; especially when I'm clearly advertised to at the time that I can buy the feature later for $6,000. If fully autonomous driving becomes available, and it costs more than what was advertised, they are going to have a big problem.