Now put "Rogero CEX-3.55 CFW V3.7" on your USB in: "USB\PS3\UPDATE\PS3UPDAT.PUP" ---> Rogero CEX-3.55 CFW V3.7.PUP
Start the PS3 and install "Rogero CEX-3.55 CFW V3.7" using the System Update from XMB.
Once you're back on Rogero CFW3.55 v3.7 you can now install any CFW 3.55/4.21/4.30 using the System Update from XMB
( or Recovery Menu if XMB Update didn't work ).
functionara?al menos eso dice :Rogero/4.XX -->Rogero /CEX-3.55 CFW V3.7--> Kmeaw/CFW 3.55 , Waninkoko v2
fuente:
http://www.tortuga-cove.com/forums/view ... e4826afd34 