it's showing error 1015 during restore my iphone

It sounds like you have an old .ipsw

Delete the *.ipsw file on your computer

Mac OS X

~/Library/iTunes/iPhone Software Updates

Windows XP

C:\Documents and Settings\[username]\Application Data\Apple Computer\iTunes\iPhone Software Update

Windows Vista/7/8

C:\Users\[username]\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates

then delete the contents of the iPhone Software Updates folder.

When you finish, try restoring again. This will force a download of the most current .ipsw for that device.

azad.ctgbd wrote:

it's showing error 1015 during restore my iphone

This usually happens if the phone has been Hacked / Jailbroken / Modified...

Unauthorized modification of iOS

http://support.apple.com/kb/HT3743

If this is the case...You will need to look elsewhere

Sorry... But...

The discussion of Jailbroken Devices is against the Terms of Use of this Forum.