No, you can't use the Homebrew DVD (iso) installer if you are on 3.3. You have to use the TP Hack method.
Hey can I install homebrew iso on 3.3 firmware? thanks
The TP method is perfect also, just make sure you get all the correct files and place them correctly.
and you can use a backup copy of zelda it will still work
it will work if your drive is chipped of course.