PS3 System Software Update (v3.70) – PlayStation.Blog
Jailbroken PS3 System software update bypass using Sen Enabler - YouTube
PlayStation 3: Sony releases Firmware 4.87 for their 14 year old console - HFW 4.87.1 is already out with SEN Enabler already being updated to spoof FW 4.87 - Wololo.net
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 software update version 4.00 is live - The Verge
PS3 System Software Update (v4.30) – PlayStation.Blog
How To Do A System Software Update On Ps3?
PS3 system software update 4.0 to land this week - SlashGear
PS3 software version check
SONY Torne Update Disk Ver.4.0 & PS3 System software Ver.4.11 Off-line | eBay