Be sure that your trouble is form installing preloader, and not a bad wad file. There is no relation between preloader and wadmanager. Once you complete the following preloader will be gone, if your issue is from a bad wad your life could get worse.
Install HBC-loader.zip into preloader, set the autoboot to the installed file. You should now boot into hbc.
Load wadmanager, use ios249
install system menu 4.1, pick the one that matches your region
Then reinstall preloader
Don't forget hacks.ini