The timeline doesn't really matter much IMO, the issue is whether the dealer knew or should have known that the update was coming when they purchased the vehicl

The timeline doesn't really matter much IMO, the issue is whether the dealer knew or should have known that the update was coming when they purchased the vehicle. It would be pretty typical used car dealer behavior to buy the car for cheap, knowing the feature would be removed, and that they could get a buyer to pay for it, and then deflect the blame to Tesla.