4.30/4.31 Downgrade?

OK i read this guide "http://www.ps3hax.net/showthread.php?t=39766"

and since I'm on 4.30 ATM...

what steps/files would change to the guide if 4.30/4.31 downgrade were possible?

and second when will there be a 4.30/4.31 downgrade available?

and lastly would it make any difference if i updated to 4.31?

all most done..

will there all ways be a downgrade with E3 Flasher with any OFW (like 4.32, 4.33, 4.34, 4.35 and so on....)