HT1414 I have done the first 3 steps but before I can get onto the 4th step a error message comes up Iphone could not be restored, an unknown error occured (1015), the iphone is a 3rd Generation Iphone 3G.

I was using my Iphone 3G and I tunes told me I needed to upgrade my Itunes, after completing this the said I need to upgrade my I phone and it just blanked off while upgrading. I tried to restore it, I get throught the first 3 steps but then a message comes up and Iphone cannot be restored, unknown error has occured (1015) Please help me ??????????????

Error 1015: This error is typically caused by attempts to downgrade the iPhone, iPad, or iPod touch's software. This can occur when you attempt to restore using an older .ipsw file. Downgrading to a previous version is not supported. To resolve this issue, attempt to restore with the latest iPhone, iPad, or iPod touch software available from Apple. This error can also occur when an unauthorized modification of the iOS has occurred and you are now trying to restore to an authorized, default state.
From Apple support page > http://support.apple.com/kb/TS3694#error3194
We cannot help you with a jailbroken device. You will have to look elsewhere.

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    mazunzo tembo wrote:
    "the iphone could not be restored, an unknown error occured(1015).
    Unauthorized modification of iOS  >  http://support.apple.com/kb/HT3743
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    Sorry... But...
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