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 Return of the Rebug Lite and 4.76.1 Lite released
PS3 System Software 4.86 Update Live, Don't Update Your Firmware! | PSXHAX - PSXHACKS
PS3HEN 3.0.3 HFW 4.88 : esc0rtd3w : Free Download, Borrow, and Streaming : Internet Archive
IRISMAN v4.90 by various - PS3 Brewology - PS3 PSP WII XBOX - Homebrew News, Saved Games, Downloads, and More!