How to Jailbreak Your PS3 on Firmware 4.86 or Lower!
CFW 4.86 Ferrox Cobra 8.20 is Available Now - YouTube
Custom Firmware FERROX COBRA 4.86 v1.00 Released
PlayStation 3 News: Rebug 4.86.1 LITE released and PS3HEN updated with FW 4.86 support - Great stuff for both CFW and noCFW users on the latest firmware! - Wololo.net