The MB is S3 luckily, I bought the unit (255w) in the US this summer and have downloaded and installed TSM9.0. The firmware is 5.10 GPS Sw 3.10b

Is there a benefit to flashing this unit if I am using TSM9.0?
I will have to see about installing CNSEA4.5. Which one is better by the way?

Thanks for the help by the way!