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
The PS3 jailbroken? USB hack allows homebrew, copied games | Ars Technica
PlayStation 3 Jailbreak - Wikipedia
How to Jailbreak the PS3 on 4.90 or lower - YouTube