PS3 update 4.82 out & should you update? NO! - Hackinformer
Sony PlayStation 3 Firmware 4.88 Download | TechSpot
Ferrox PS3 Custom Firmware 4.81 COBRA 7.52 v1.03 by Alexander | PSXHAX - PSXHACKS
Playerkp420 4.81 CFW Cobra 7.3 PS3 Custom Firmware is Released | PSXHAX - PSXHACKS
Webman Mod and Launchpad on PS3 Rebug 4.81.2 - YouTube
PS3 CFW SPY 4.81 CEX Update by DarekSpy, Works with MultiMAN 4.80 | PSXHAX - PSXHACKS
PS3: Official Rebug 4.81-REX/D-REX with COBRA 7.31 released - Hackinformer
PS3] 4.81 OFW Update | ConsoleCrunch Official Site
PS3 Firmware 4.82 released, one year after last update & mere days after 4.81 exploit revealed - Wololo.net
CCCheaterX Tool (Unofficial Update) for PS3 CFW 4.81 by Darkxex | PSXHAX - PSXHACKS
PS3 IDPS Dumper for Firmware 4.81 incoming... - Hackinformer
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
How to Jailbreak Your PS3 on Firmware 4.89 or Lower! - YouTube