Do you receive an â€œinteral errorâ€ when you are updating your iphone or ipad to appleâ€™s latest operating system IOS, iPad could not be restored. An unknown error occurred (3200)", or ios 5 server unavailable? One of the more common is error 3200 or error 3002. It means the apple server is full with verification requests and can't process yours iTunes or iTunes cannot contact the gs.apple.com server on ports 80 or 443. This may be because out-of-date or incorrectly configured security or firewall software is interfering, an old version of iTunes is installed, an entry in your hosts file redirecting requests to gs.apple.com, or because of your Internet proxy settings.