Yes, update to Rogero v3.4 with 4.21 spoof, basically you're on Rogero's version of 3.55, you will not get anything better by using Kmeaw, it's an older CFW and Rogero's already has spoofs and patched LV2 and peek and poke...all the stuff needed is there.
The spoof is to prevent accidental firmware updates to OFW which will render your PS3 useless to homebrew and game back-ups.
3.55 is the highest firmware you can have that allows signed code to execute.
all the info on Rogero's CFW and Manager are here:viewforum.php?f=127
Now all you need is some good Homebrew...I recomend *cough* Solar.viewtopic.php?f=25&t=3330
LOL..lil plug. ;P
and ask-away man, that's the reason for Tortuga-Cove... to help.