PS3 Update to System Software 4.89: Here's a Full Guide for You - MiniTool Partition Wizard
Mandatory Playstation 3 firmware 4.60 is now available! - Wololo.net
Can I jailbreak a PlayStation 3? My software is 4.90, the latest update. - Quora
Wario64 on X: "PS3 received a new firmware update today (4.91 - This system software update improves system performance.) https://t.co/wjNBJAksVA https://t.co/EKdWIHrLlH" / X
Surprise! There's a new PS3 firmware update - here's what patch 4.88 does | TheSixthAxis