ps3 4.82 custom firmware

Hey bros, i have a ps3 on 4.70 CFW Habib multiMAN, but I want to go with Rebug multiMAN 4.82. Should i format the ps3 from settings, and jailbreak it or what?

So i'm new to this and currently going to upload the custom firmware onto my PS3 and I've so far done all the steps correct until I get to the part where i'm supposed to do the dump checker and everything seems to be good until I see two errors called " 009.02 ROS0 Hash" and "009.05...

PS3 Firmware update 4.82 hit the other day , which was suspected to close the PS3Xploit,, however it seems a future update will be patching that exploit as 4.82 was a planned update by Sony and did not address the PS3Xploit quite yet, but we expect that to come soon. However for you exciting...