PS3 System Software 4.86 Update Live, Don't Update Your Firmware! | PSXHAX - PSXHACKS
Long-awaited PS3 firmware v2.40 is live – Destructoid
PS3 Firmware List - PS3 OFW/HFW/CFW Firmware History
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
Full screen Flash-enabling v2.53 PS3 firmware available now | Engadget
PlayStation 3 Firmware Update 4.40 – Download Here
Air Force may suffer collateral damage from PS3 firmware update | Ars Technica