Originally posted by EasterEggNinja
Hello there NGU !
I would really like some help with:
-downgrading my ps3 from 4.25 OFW to 3.55 (BlackB0x if possible)
-Installing a Jailbreak on 3.55
Or:
-Installing a Jailbreak on 4.25 OFW (BlackB0x if possible)
and:
- How to make a Back-Up from my ps3 systems (that includes game files)
and:
-Modding of BO Zombies (SOLO)
IF U COULD ONLY HELP ME WITH ONE OF THOSE THINGS I WOULD BE REALLY HAPPY!!! :happyguy: :carling:
I tried to do this for so many times but i don't really know what kind of .pkg and .pup files i need for my ps3
(i'm also getting really sick from those damn it Surveys out there... :FU: )
What do i need ???
Thanks everyone who read's this! 
-EasterEggNinja (PS3-LOVER)
Ok here is your compact answer.
For downgrading you need to have soldering/opening up ps3 skills and a compatible ps3 and trust me dude you wouldn't go that way.
If you are on 3.55 install kmeaw cfw its the most stable and best version of cfw for noobs.
If you have two ps3 one running cfw of course and the other on ofw you can transfer things between them via a Ethernet cable.Your cfw ps3 must be spoofed to latest firmware.
don't know about modding games I actually hate that stuff lol. but theoretically if you have a cfw ps3 you can transfer modded stuff between them
Listen a.pup file is used for upgrading/downgrading ps3 firmware.
A .pkg file is used for installing stuff in ps3 like a .exe does in windows.
last thing there is no jailbreak/cfw above 3.55 till now.Surveys are scams don't do them.
For reference
OFW= official Sony firmware
CFW = Custom/Modified Firmware
summary you need to find a ps3 on 3.55 first.