DON'T UPDATE Your PS3 Firmware Version To 4.83! (CFW PS3 Only) - YouTube
Tutorial: How to use PS3Xploit to hack your PS3 and go directly to Rebug 4.81.2! (Noob friendly) - Wololo.net
Ferrox PS3 Custom Firmware 4.83 v1.00 Cobra 7.55 by Alexander | PSXHAX - PSXHACKS
PS3 News: multiMAN 4.85 released coming with support for CFW 4.83 to 4.85 - First update to this highly popular backup manager since the release of FW 4.82! - Wololo.net
News: FERROX 4.85 CFW with Cobra 8.20 released for the PlayStation 3 and RetroArch 1.8.1 is out with accelerometer/gyroscope support on PSVita & Switch, further improvements to mobile UI and more! - Wololo.net