How To Downgrade Your CFW PS3 To A Lower Custom Firmware! [EASY WORKS WITH ANY KIND OF A CFW] - YouTube
Sony PlayStation 3 Fat: Downgrade to Firmware 3.55 - YouTube
How to Jailbreak a PS3 (with Pictures) - wikiHow
How to Jailbreak a PS3 (with Pictures) - wikiHow
SANY ilaya - UPDATE!!! PS3 4.50 OFW DOWNGRADE (hardware flasher method)/UNBRICK SERVICE for BRICKED PS3 due to FAILED firmware updates (see guide below) JAILBREAK: -Software: for firmwares 3.55 below (slim and phat) -