my friend upgraded my psp firmware to 6.21. Now I can't play both iso and cso ga

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    xaviesunnyposted 7 years ago

    my friend upgraded my psp firmware to 6.21. Now I can't play both iso and cso games. How can I...

    degrade back to my original version? Please help.... please send me the steps to my email- xaviesunny@yahoo.co.in

 
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