psp - pandoras battery problem :(

[H2O]

got a new psp .. following this guide to play my iso's ..

YouTube - How-To Install Pandora's Battery on Vista
YouTube - How-To Install Pandora's Battery on Vista Part-2
YouTube - How-To Install Pandora's Battery on Vista Part-3

while im restarting my psp in the 1st stage of installing pandora's battery its giving an error .. saying - : this game could not be started (80020148) "

what should i do ?
can some help , please ?? !

 

[Bl^nK]

YouTube - The game could not be started.(80020148) CFW&Homebrew only!!

 

[nukeu666]

goto recovery mode and select 1.5 kernel and sony9660 emulation, by default they are on 3.xx kernel and no umd