PS3 Downgrade Jailbreak 4.82 to 3.55 No Password No Survey - Tested
PS3 3.66 Downgrade Tutorial by The Jailbreak Master 1 | PDF | Play Station 3 | Usb Flash Drive
Downgradable PS3 Models - Wololo.net
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) -