PS3 Firmware 4.82 released, one year after last update & mere days after 4.81 exploit revealed - Wololo.net
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 4.81 exploit: IDPS Dumper released, and latest status of the exploit - Wololo.net
PS3 Custom Firmwares (CFWs) : Free Download, Borrow, and Streaming : Internet Archive