Moreover, some reviews show that the upgrading let their devices much slower in running applications.More and more data storage will take up much space of your i Phone, such as photos, videos, text messages, etc.When you find the delay time is longer when you launch Camera, Contacts, or other applications, you may need to restore the device.For many cases like the situations mentioned above, numbers of i Phone users are unwilling to upgrade their devices when they have to restore their i Phone 4/5/6/7.The latest i OS 10 concentrates on stability improvement and bug fixing and seems more secure than i OS 8 and earlier versions.
You will need the latest version -- i Tunes 12.2.2 -- to do this.
Many people complain that the i Phone battery drains very fast than expected after the updating.
And the device gets hotter than before in a short time.
Hence, upgrade it to the newest version and then try to carry out your task. Next up, you have to enter the password which you use to sign into your computer.
Then, you have to double click on the Hosts file to edit it. If you find any entries for “gs.apple.com”, then remove it and save the Hosts file. If there is no entry in the hosts file for “gs.apple.com” and you continue to encounter Error 3194, you need to disable the firewall or anti-virus software on your computer, They might be preventing i Tunes from connecting to Apple servers.