I myself have a 120GB PS3 Slim and I can play games with Kmeaw + Rogero 3.8 + lv2 v1
But when my friend came with his 320GB PS3 Slim, we updated it to 3.55 OFW, then Kmeaw and tried with different backup managers, but neither of them worked
Even tried Waninkoko's CFW and still got nothing
CFW: Kmeaw and Waninkoko
BM's: Rogero v3.8 and v3.9a, Multiman v1.13.02 and v1.13.04, Gaia v2.04
LV2: v1 and v4
Update Method: XMB and Recovery Mode
What to do ?
Problem solved !
Had to run the FixPermission.pkg
Don't know why I have to on the 320GB version, when my 120GB don't need it....