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 firmware 3.21 rolls out, causes drama and a hack - PC World Australia
OtherOS running again on hacked PS3 firmware – Destructoid
PlayStation 3 version 3.6 firmware jailbroken | Ubergizmo
Latest PS3 firmware already hacked | VG247
How To Install Custom Firmware On PS3- PS3 Hack Play PS1, PS2 Games | Review Unit