error 3004

anche io!!!

Follow the instructions here:

http://support.apple.com/kb/TS3694#error3004

questo link non mi risolve il problema!!!!! non dice nulla di utile. ho provato tutto ciò che dice! :(

didn't see how this could help

They didn't suggest anything that would help, they were having the problem a year ago.

i don't even see the line "sudo nano /private/etc/hosts" in terminal as described on <Error 3194, Error 17, or "This device isn't eligible for the requested build" - Apple Support>

You have to type that line yourself.

dude thats not what the thing says, plus thats not the only line missing

1. In the Finder, choose Applications > Utilities.
2. Open Terminal.
3. Enter this command and press Return:
   sudo nano /private/etc/hosts
4. Enter the password you use to sign in to your computer and press Return. You won't see text appear in the Terminal window when you enter the password. Make sure you use a nonblank administrator password.
5. Terminal will display the hosts file.
6. Navigate using the arrow keys and look for an entry containing “gs.apple.com”.
7. Add the # symbol and a space ("# ") to the beginning of the gs.apple.com entry.
8. Press Control-O to save the file.
9. Press Enter when asked for the filename and Control-X to exit the editor.
10. Restart your computer.
11. Try to update or restore your iOS device again.

Instruction #3 tells you to enter that command which would entail you typing the characters and then pressing Return. If you are not familiar with using terminal perhaps you should find someone that has rudimentary computer knowledge and get them to help you.