PS3 System Software 4.86 Update Live, Don't Update Your Firmware! | PSXHAX - PSXHACKS
PS3 CFW SPY 4.81 CEX Update by DarekSpy, Works with MultiMAN 4.80 | Page 2 | PSXHAX - PSXHACKS
PlayStation 3 Firmware Update 4.40 – Download Here
Widgets - PS3 Developer wiki
PS3 firmware update may coincide with Resistance 2 patch [Update] | Engadget
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