I got an error no 1015 ! what does it mean ? and How Can I solve this issue?

Type "1015" into the search abr at the top of this page by Support and read the reulting help articles.

It means your phone was jailbroken or hacked and you can not get help here.

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.

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