But first you must check if your ps3 model is a 16mb mem so that it wonīt brick.. Mine is a CECHH, so no problem!!! Thereīs another thread here at ps3news that has a list of some brickable and non-brickable models, check it out ok??
I installed the Kmeaw CFW following this steps:
1 - Updated from 3.41 to Oficial 3.55 via USB in normal mode (not jailbreaking it);
2 - After updating, went into Recovery Mode (search ps3news too, easy to find how to do it) and updated with the Kmeaw FW 3.55 via USB;
3 - Installed Multiman 1.13.01 and installed multman 1.13.02 update via USB.
4 - Done!!!
Thatīs it!! Simple and itīs working fine for me!!!
But remember: Check the model of your PS3, and when updating to Kmeaw FW do it in Recovery Mode!!! This is a must, ok??
Yes, thereīs a CFW for you which is the one I have installed sucessfully in my fat one.