If I have a Dex jailbroken PS3 on 4.84, can I still get online even though the latest version is 4. 84? If not, how do I update it without ruining the jailbreak? - Quora
How to Jailbreak the PS3 on 4.89 or lower - YouTube
Help] PS3 Fat CECH 3001A jailbreak V. 4.66 : r/ps3homebrew
How to Jailbreak Your PS3 on Firmware 4.89 or Lower! - YouTube