Well, not want to be rude in any way, but if that is already a problem for you, you should NOT use this softmod at all. Also there is no reason to use it if you don't have 128MB ram, don't want to go above 2TB with your HDD and you don't want to use CCI.
Anyway. There is no option to update from Rocky5's softmod to this one.
How ever, if you like to update for what ever reason, I suggest to follow MrMario2011's YT tutorial :