Originally posted by yanqi83:

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Hi, I just bought a new slim psp, the system software is 3.80 m33-5 . May I know what is that? I have already re-formatted my memory stick under system settings. (all the folders are done, iso, psp, game etc)

I placed a downloaded game with .cso format in the iso folder, it doesn't work! When I tried that on my sister's psp, with 3.71 m33-2, it works! Can anyone tell me why?

I can't play any downloaded games. *sobz*

I have read alot of posts on downgrading it to 1.50, but I am kinda worried it will damage my psp. I don't have an extra battery to make the pandora's batt.

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Originally posted by 07anto07:

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Originally posted by yanqi83:

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Hi, I just bought a new slim psp, the system software is 3.80 m33-5 . May I know what is that? I have already re-formatted my memory stick under system settings. (all the folders are done, iso, psp, game etc)

I placed a downloaded game with .cso format in the iso folder, it doesn't work! When I tried that on my sister's psp, with 3.71 m33-2, it works! Can anyone tell me why?

I can't play any downloaded games. *sobz*

I have read alot of posts on downgrading it to 1.50, but I am kinda worried it will damage my psp. I don't have an extra battery to make the pandora's batt.

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hi press the select button on ur psp go to umd iso mode change it to m33 or np9660

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Quote:

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omg it works! ok I feel like such a fool. i spent a few hours reading tons of stuff.

thank u so much!!!

btw what it that for?

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