To make sure that your i Phone is running the latest version of i OS, you'll need to connect it to your computer and download the update using i Tunes.But don't worry: the process is pretty painless.If you can’t update wirelessly on your i OS device, you can update manually using i Tunes on a computer that you trust.If your computer is using Personal Hotspot on the i OS device that you’re updating, connect your computer to a different Wi-Fi or Ethernet network before you update.To update i Tunes, go to the "Help" menu, and select "Check for updates." If i Tunes says you have the most recent version, you're all set to move on to Step Two.If i Tunes tells you that a more recent version of the application is available, download it.Reiboot and Rei Boot (Mac) enables you to fix i OS freeze, i Phone crashed during i OS 10/9 update, Recovery Mode stuck, DFU stuck, red i Tunes logo stuck, etc. Then Rei Boot will automatically detect the condition of your i Phone.You can either click "Enter Recovery Mode", "Exit Recovery Mode" or use both according to the detecting result to reboot your i Phone.
If you see an error message while trying to update your device wirelessly, learn what to do.
You can also use these tricks if your i Phone stuck in Recovery Mode (red i Tunes logo)/reboot loop during updating to a new i OS version and if your i Phone is working fine and suddenly it freezes. Keep pressing the Home (Volume Down button for i Phone 7 and i Phone 7 Plus) and the Power button simultaneously until the Apple logo comes back on again.
As we all know, restarting your i Phone seems to be an omnipotent trick to solve most minor problems on the first try. Then release both buttons and your i Phone should boot up successfully and work normally.
Need to update i OS or restore the device from backup but i Tunes does not recognize your i Phone, i Pad, or i Pod?
i Tunes could not backup or restore because i Phone disconnected?
This means you have four basic choices to get the i OS update to kick off, some of which still use i Tunes to update the i Phone, i Pad, or i Pod touch, and the other which uses the familiar OTA update mechanism.