Hello everyone. My case is that I replaced my HDD on my PS3 Slim and have to Install the OFW 4.84, but this console used to have the CFW Ferrox 4.75, is a 3001b for what it says, I used the MinVerChk and the lower version for this PS3 was 3.72. I currently use the Hen 2.1.0, the Hybrid FW. Other note is that I bought it used, so I do not know if the motherboard is other than the serial number. Can I install a CFW like Rebug on my console? Or will I get a brick and should stay where I am? Thanks you.