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I just want to make clear I did following,I follow all articles regarding error (-1) in apple support.Updated itunes, Turn off windows firewall, Paused my antivirus, Checked host file,itunes diagnostic test,LAN connections, andTried whole process in 2 different Windows 7 pc.
Before I update to the new iOS 6.1.2, I tried using my wifi connection and it's pretty slow and not able to do it, so I downloaded iOS 6.1.2.
After connect my iphone 5 to my pc, I put it on DFU mode by pressing home and power button together and it appears in recovery mode. I already downloaded iOS 6.1.2, so just holding Shift key and Browse iOS 6.1.2 start restoring my iphone 5. But at the very end it shows error (-1) and interrupt and my iphone again shows iTunes logo. Now I can't go out of DFU mode or update to the latest iOS. It's a brand new phone. It just showing itunes logo. Please help me to fix this issue.
While I did the Network Connectivity Tests, I found:Secure link to iTunes Store failed.
Windows Firewall is off.
Connection attempt to Apple web site was successful.
Connection attempt to browsing iTunes Store was successful.
Connection attempt to purchasing from iTunes Store was successful.
Connection attempt to iPhone activation server was successful.
Connection attempt to firmware update server was unsuccessful.
The network connection timed out.
Connection attempt to Gracenote server was successful.
I tried everything but those two error got never fixed.
Did you download the correct firmware for your iPhone 5 from a relaible source ?
Get the iPhone out of DFU mode. Connect in iTunes and Shift+Restore pointing to downloaded correct .IPSW file.
Go throughError 1 or -1
This may indicate a hardware issue with your device. Follow Troubleshooting security software issues, and restore your device on a different known-good computer. If the errors persist on another computer, the device may need service.
I downloaded firmware from here GSM version
6.1.2 (5 GSM): iPhone5,1_6.1.2_10B146_Restore.ipsw
I got another iphone 5 and I update the iOS in same way. It won't work.