Solution : restore iphone 4 error 1013 and 1611

Ref: http://discussions.apple.com/thread.jspa?threadID=2655717&tstart=0 , Peru

Remove the line that has gs.apple.com completely and save host file on your host system.


Please use the following the instructions depending on your system

On Mac:

* Open Finder
* Hold down COMMAND + SHIFT keys and press 'G'
* Enter "/private/etc/" in the field and press "Go"
* Find "hosts" file in the directory
* Drag the file to your desktop
* Open it in text editor
* Remove the line that has gs.apple.com entirely or put a # at the beginning of it to comment it out
* Save the file
* Drag it back to the /private/etc/ folder.
* You'd need to enter your username and password to authenticate the move

On Windows:

• Locate the hosts file in one of the following directories:

Windows 95/98/Me c:\windows\hosts
Windows NT/2000/XP Pro c:\winnt\system32\drivers\etc\hosts
Windows XP, Vista, 7 c:\windows\system32\drivers\etc\hosts 

• Right click and click on "Open With..." and then click on "Notepad" on the list.

* Remove the line that has gs.apple.com completely and save the file.

restart your itunes.

This should work fine but you will lose all music, photos, videos and books :S