PS3 Firmware 4.90 is out! (and you really don't want to update) - Wololo.net
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 Update 4.90 is live. What does Sony want with this vintage system now... : r/playstation