Rogero CFW 4.30 v 2.03 can be installed fine from XMB Update over any OFW3.55/CFW3.55/CFW4.21/CFW4.30
How to Install:
Make sure there is no disc in BD and that no internet connection is available.
Plug your USB to your PS3.
Then go to system update in XMB and from there select mass storage.
Your done installing
(CHANGE THE FILE TO PS3UPDAT.PUP )
Go to Settings --> System Update --> Update via Storage Media
Link download
HERE
How to Install:
Make sure there is no disc in BD and that no internet connection is available.
Plug your USB to your PS3.
Then go to system update in XMB and from there select mass storage.
Your done installing
(CHANGE THE FILE TO PS3UPDAT.PUP )
Go to Settings --> System Update --> Update via Storage Media
Link download
HERE