If you're looking to increase performance, then no.....you can't swap software for that.

About the only reason I could see attempting to swap to Lexus software would be if you had an inherent software issue and had exhausted all other options. And even then, it wouldn't work without extensive, expensive custom programming.

Do not try it. If it is messed up, then you will have a hard time finding someone who is willing to fix it. Not many people know how to fix them.Btw what do you want to get out of the upgrade?

Well not really I mean when there is a failure of software they get upgraded software to fix problems but there's no way to upgrade them to make the perform better