How To - Downgrade The PS3 CFW From 4.82 To 3.55 OFW Step By Step - YouTube
Downgradable PS3 Models - Wololo.net
How to Downgrade PS3 Slim to 3.55 using the E3 Flasher (The Easy Way) - YouTube
Downgradable PS3 Models - Wololo.net
How To Downgrade PS3 4 81 To 3 55 and Install 4 80 CFW Step by Step - YouTube
PlayStation 3 hacked with CFW again. "release of LV0 decryption keys will allow jailbroken consoles to circumvent any future security updates made by Sony." : r/gamernews