PS3 Update to System Software 4.89: Here's a Full Guide for You
PlayStation 3 System Software Update 3.72 Now Live (updated) | by Sohrab Osati | Sony Reconsidered
How to Jailbreak a PS3 (with Pictures) - wikiHow
How to Upgrade PS3 Official Firmware 4.82 - YouTube
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
Sony PlayStation 3 Firmware Download
PS3 Firmware 4.82 released, one year after last update & mere days after 4.81 exploit revealed - Wololo.net
How to Update a PlayStation 3 - Support.com TechSolutions