When you've successfully done the Ps3 jailbreak method get a backup manager! I suggest using multiMAN

Multiman v.4.01.00 <-----Click Link
Multiman v.4.01.01 UPDATE <----- Clink Link
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You also need BDEMU2* (find it here -> BDEMU2.rar )
So if you used the Ps3 jailbreak method, you have Kmeaw's CFW so make sure
you download MultiMAN for Kmeaw (Fw 3.40~3.55/WNK/3.55Kmeaw)
and NOT Geohot (Fw 3.55 GH/WTNG Mega Pack)
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Put the MultiMAN package on your USB root stick.
Stick it in your ps3 and when you've successfully done the Ps3 jailbreak method,
you should have the option in the game menu "Install Packages"
Install the MultiMAN backup manager from your USB stick and there you have your backup manager
You will now see MultiMAN in your ps3 Game menu. Done!