I changed mine manually and i think it "Broke my Game" , it would freeze on the loading screen , not connect online , take over 3 minuts to load between title page and GT Life , if i backed out from GT Life to the title screen then the cursor would disappear and i couldn't choose anything , long with a host of other problems.
I have now deleted the game and anm currently downloading the patch and re installing , hope fully my game save will be alright but it is copy protected so if it goes then i will just have to start again.