The dealership can lock your ECU when they update it. This has happened to a few people. But since its a 2020 it can be bench unlocked again. And you will need to reflash the tune back in also.I don't have a Supra yet, just doing my pre-purchase research. I've been looking at used MY20 so I don't have the lock edu problem of the MY21's. I am going to do Pure800, DP, and Ecutek whenever I get the car. My question is, if the PO took the car to dealership and they did the ecu reflash/update, will I still be able to unlock the ecu to do Ecutek or would I be SOL until they unlock the 2021s? Is there a way of knowing if this update was done prior to purchasing the car?