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
23/1/17] How to Jailbreak PS3 4.81 OFW to CFW [Working 23/1/17] - YouTube
PS3 Custom Firmwares (CFWs) : Free Download, Borrow, and Streaming : Internet Archive
PS3 - [TuT] How to sign in on OFW 4.81 or 4.82 & activate your system | PSX-Place