PS3 Update to System Software 4.89: Here's a Full Guide for You - MiniTool Partition Wizard
4.89 Evilnat just dropped upon us ! Working flawless on my 2501B :) : r/ps3homebrew
PS3 - 4.89 Update is Live! - Discussions / Details about the firmware update | Page 13 | PSX-Place
PS3 - 4.89 Update is Live! - Discussions / Details about the firmware update | Page 16 | PSX-Place
Menu problems after firmware update 4.89 : r/PS3
HFW 4.89.1 Released ! : r/ps3homebrew
MISE A JOUR PS3 et PSVita : des firmwares 4.89 et 3.74 disponibles, de quoi énerver les nouveaux joueurs - GAMERGEN.COM
New PS3 4.89/PS Vita 3.74 System Software Update? Let's talk about it! | Nagato Revenge - YouTube
PS3-Update auf Systemsoftware 4.89: Vollständige Anleitung - MiniTool
How To Jailbreak Your PS3 On 4.89 With NEW CFW! - YouTube
PS3 System Software Ver. 4.89 - XTREME PS
PS3 Update 4.89 Now Live; Adds Additional Account Protection
PlayStation 3 System Software Update 4.89 : Brandon Michael Hafer, Sony Interactive Entertainment : Free Download, Borrow, and Streaming : Internet Archive