Waninkoko did make a safe 4.1 updater but it is gone from his blog. Probably because it's old and he's up to a 4.3 updater or something like that. You could just update to 4.1 if you want but we don't have a specific guide for doing so to my knowledge. It's not a bad thing to run Maui's whole guide because not only will it get you to the system menu you want to be at but it will update everything that's currently outdated on your system. Seeing as how you already have a functioning homebrew channel it makes everything all that much simpler.