PS3 Update to System Software 4.89: Here's a Full Guide for You - MiniTool Partition Wizard
PS3-Update auf Systemsoftware 4.89: Vollständige Anleitung - MiniTool
update 4.89 just dropped. : r/PS3
PS3 Firmware 4.89 and Vita Firmware Update 3.74 Downgrades Online Functionality
How To Jailbreak Your PS3 On 4.89 With NEW CFW! - YouTube
ps3 system update 4.89 and hen install.. - YouTube
Menu problems after firmware update 4.89 : r/PS3
PS3 Firmware 4.89 and Vita Firmware Update 3.74 Downgrades Online Functionality
PlayStation 3 System Software Update 4.89 : Brandon Michael Hafer, Sony Interactive Entertainment : Free Download, Borrow, and Streaming : Internet Archive