Specifically, it says that their current i OS is up to date when checking for an upgrade.
Other readers report that their i Phone 5, 5C, and 5S models won’t update even after trying multiple times, deleting and re-downloading.
In the case there is an issue during the install, backups are there to get your i Device back into working order. So yes, it’s worthwhile to backup your i Device, using both i Cloud as well as i Tunes.
For specific information on how to backup, please refer to our complete step by step guide that shows you how to do a full backup of your i Device.
i OS Update (i Tunes) Automatic i OS Update Optional i OS Update i OS Update (i Tunes) To update the Apple i Phone 5 to i OS 8, i Tunes version 11 or later must be installed on the computer prior to installing the update.