Something you should stay far away from unless you plan on bricking your psp . As xist said use cxmb it works fine . If you however is in a temp cfw then it will only work while you are on the cfw mode & there nothing you can do but switch to a perm cfw if you want full time xmb customization .i did use cxmb around 6.35 or so, i couldn't get it to work at one point. haven't used it in awhile. i didn't know if it had been updated to support recent cfw. I haven't heard of rco editing, what is it?