DON'T UPDATE Your PS3 Firmware Version To 4.83! (CFW PS3 Only) - YouTube
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
How To Jailbreak A PS3 On 4.83/4.84 (Easy 2019) - YouTube