I think the SC pushes the latest update to the car once they start working on it. I had the same experience when I recently had them look at the shudder issue. Moments after they received it at the SC, I got a notification of an update. I think this shudder is either coming from a software parameter they are actively tweaking or possibly a part that did not cooperate with an update and needed to be replaced. As of yesterday, I have not had the shudder. I did change my steering to Sport as well, not sure if that affected it.