[SOLVED] Updating Qt 5.3 to Qt 5.4

Hi, every time, I visit this forum, I get the information about a new Qt version 5.4. Since I never did an update before, I don’t know how to do this. I have installed Qt 5.3 for windows. How do I do the update? Do I have to uninstall and remove Qt 5.3 in total?? I don’t even find an uninstall program on my computer… I would be really glad to get some information about that stuff. Also I’d like to know if I have to be careful with some existing settings like existing include paths etc… Is that all removed after intalling the new Qt version? Thank you in anticipation!