First of all. What USB Loader are you using? Keep in mind that CFGUsbLoader Can't load more then 4KB worth of Cheat codes.
thats not true i use cfg and my file is 13kb i have almost 3000 codes in it with no problem, anyway hollow depends on ur loader cfg is one of the best out there i think. it works just like gecko when u add cheats and simply replace anything u would use riivo for. also don't forget the gameconfig.txt file in the root of ur sd *not ur usb drive*