you can only run backups from pc, internal hdd or through bd-emu.
running backups from pc is described here: http://www.ps3news.com/forums/ps3-de...de-109988.html
from internal hdd is not easy i think, i didn't try this yet. i always use/used the bd image generator and run backups with bd-emu.
but all this ways don't support many games, and you always have to have the debug eboot.bin and you have to edit this.
hopefully we get jb support or a similar solution, also think that for example medal of honor needs fw 3.42 also on the test unit, and the newest debug fw leaked is 3.20 or 3.21 so you can not run backups from newer games or the original. sad but true.