Can 4.55+ games be dumped at this point?

I was under the impression that games that require over 4.55 OFW could be dumped using the firmware spoofer. Is this correct?

Obviously the backups could not be played, but I just went through and dumped all of my <=4.55 games and am hoping to just finish this long and annoying process in one shot.

If this can be done, is there a guide to using the spoofer? I followed KiiWii's guide and used their files and everything seems to work just fine *except* for the spoofer.