Or using i Care Fone , an overall i OS care tool, to elevate your i Phone, i Pad experience at a whole new scale.
For most users, simply having patience or going with the OTA Software Update mechanism is preferable and very easy, though the latter is sometimes impossible to update due to storage constraints, and the i Tunes approach becomes a necessity.
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.
Accept all prompts necessary to install the updated software.
Note: Apple's updater is likely to suggest additional software that you can download (such as the Safari browser); none of this is necessary.