PS3 Update(4.84) : Sony : Free Download, Borrow, and Streaming : Internet Archive
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
PS3 HFW (Hybrid Firmware) 4.84.1 - PS3Xploit HAN & Flash Tools Restored for 4.84 OFW users - Consoleinfo
PS3 Firmware Update 4.87 Is Out - RPCS3 Quick Guide - YouTube
PS3 Firmware Update 4.84 Thoughts by DarshD - YouTube