Banana Saves applies patches to the System Menu on-the-fly to allow you to copy your protected savegames to your SD card within the System Menu. It doesn't modify the NAND and has no risk. It's partially based on Waninkoko's Menu Patcher.
Banana Saves needs an IOS with NAND permissions (any cIOS will work).
It's compatible with:
3.2 (U and E)
4.0 (J, U and E)
4.1 (J, U and E)
4.2 (J, U, E and K)
4.3 (J, U, E and K)