It says on my invoice: Performed TSV EG5017 ECM, Transmission Recalibrated.
So, I guess you got the right upgrade.
My update:
I took the car out today to do some chores, which included city & hiway driving. I still feel that the shifting of this transmission is as good as I can expect on any automatic. Previously I couldn't say that! I didn't notice any notchiness at all. The shift points were changed for the better in my estimation, and the shifting is extremely smooth.
I was wondering whether this upgrade is similar to the Canadian models, because they never complained about hesitations? Also, I wonder if the car still meets ULEV specs.
From what I can see, the electronic throttle was really never at fault. If it was, I can't see how this upgrade was able to fix the hesitation, unless this upgrade affected both the transmission and throttle.
I might be wrong, but due to the fact that the shift points are different, the fuel economy might suffer slightly in city driving. But I don't care! I'm completely happy. :D
I might add, I'm still using Regular grade fuel even though Lexus still suggests Premium. I was using Premium for awhile, but I honestly didn't notice any difference in performance.
Now I can say....This car is great!!!