i had the same problem as u. these people keep saying " put it in flash 0" yeah if u want to risk getting bricked but n e way if im not mistaken u should putthe rco file like so E:\cxmb\vsh\resource\system_plugin_bg.rco and E: being the root of mem stick. oh and u have to make thevsh folder and the resource folder!
fat: ofw>power fuse dead>jumped,back to life>pandora3.71m33-2>3.90m33>3.90m33-2>3.90m33-3
slim:3.60>pandora3.71m33-2>3.90m33>3.90m33-2>3.90m33-3>4.01m33>4.01m33-2>pandora3.90m33-3
chinese mod ship psp:3.01oea