I have a curve with US Cellular

v4.5.0.66
Platform 3.2.0.48

i am trying to upgrade the OS to .131 or .138 but its not working. I removed the vendow.xml files. whenever i save a new os to my computer it runs it and goes but does nothing to the phone. I dont see an .exe file for the OS upgrade. The installshield program runs it all. I need to upgrade this OS to get the new messenger, also I have an ESN device. Any help would be greatly appreciated!