Next PS3 Firmware Update Adds PlayStation Store Recommendations – PlayStation.Blog
PlayStation 3: Sony releases Firmware 4.86 for their 13 year old console - HFW 4.86 released, SEN Enabler updated & PS3HEN to be updated soon due to no kernel changes! - Wololo.net
PS3 System Update 4.88 Patch Notes | Attack of the Fanboy
PS3 System Software v.4.21: F/W Only (USA) : Free Download, Borrow, and Streaming : Internet Archive
PS3 system software update version 4.00 is live - The Verge
PS3 System Software Update Version 3.66 is Now Live | by Sohrab Osati | Sony Reconsidered
Playstation 3] System Software Update 4.85 Released - MateoGodlike
PS3 4.46 Firmware Live: Fix for Bricked Console
PS3 software version check
PS3 Gets New System Update Improving 'System Performance' | eTeknix