hi, i have some retail games i want to back up. now, i read that if you back up a game using a cios (e.g. via a usb loader) then it is not a correct dump. (but you still get the game) i read something that because it using a cios read the game differently, it rips differently (aka. bad) as well, is this true? and if i dump via sd using some homebrew app, would that be a 'perfect backup' (like a scene rip). i know HOW to back up, just, i want good backups thank you!