Originally Posted by CrossUSAAF
Latest update version currently is version 4.25. Is it downgradeable, because I'm right now on it.
My version is PS3 Slim with maximum memory model number CECH-2504 B.
Use MINVERCHK in my sig to find out if your PS3 is downgradable to 3.55, but yes 4.25 is downgradable with E3 flasher.