Doesn't work, never will. Nothing on the firmware side will ever make it so with this device (or at least nothing that any dev has been prepared to do, put it that way), pretty much limited by hardware.
If it's important enough to cause you grief if it's lost, back it up. No excuses
Trolling for thanks is lame
Does Samsung's auto-brightness implementation crap drive you to self-harm ? A solution !
Failure to search is the leading cause of male impotence on XDA
If you don't know how to recover if things go wrong, what are you doing flashing custom roms ?