Resetting the hosts file affects software services that rely on hosts file redirects. If you're using Windows on a business computer, consult your IT department to be sure applications work correctly after you reset your hosts file.
Mac If you're using a Mac, follow these steps: Type this command and press Return: 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 type your password. Terminal displays the hosts file. If you don't see any entry containing gs.
Add the symbol and a space " " to the beginning of the gs. Press Control-O to save the file. Press Return when asked for the filename. Press Control-X to exit the editor.
After your computer is finished restarting, try to update or restore your iOS device again. Be sure you have a working Internet connection. Bypass your Internet router. Some routers might block iTunes from accessing the update server. If you're using a router that isn't manufactured by Apple, try the following: Disconnect from your wired or wireless router and use an Ethernet cable to connect your computer directly to your modem.
Restart your computer and modem. Contact your Internet service provider for instructions on using your modem. After you confirm your Internet connection is working, try to update or restore your iOS device again.
Restore or update from another computer Try to restore or update on another computer with a different Internet connection. This helps to make sure there aren't issues with your computer that might stop iTunes from communicating with the update server. Errors , , and with the exception of are sometimes caused by your network settings. If your computer uses a managed network, refer to your network administrator. Proxies, firewalls, and other network security measures can cause these errors.
If necessary, find a different network connection to restore the device. For example, if you're restoring at work, try to restore at home or on a friend's computer and network. Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products.
Apple makes no representations regarding third-party website accuracy or reliability. Risks are inherent in the use of the Internet. Contact the vendor for additional information. Other company and product names may be trademarks of their respective owners. Sat Mar 26