Problems updating ipod touch to ios 5
i OS 5 is the fifth major release of the i OS mobile operating system developed by Apple Inc., being the successor to i OS 4.It was announced at the company's Worldwide Developers Conference on June 6, 2011, and was released on October 12, 2011. i OS 5 revamped notifications, adding temporary banners that appear at the top of screen and introducing the Notification Center, a central location for all recent notifications.i OS 5 also featured deep integration with Twitter, introduced multitasking gestures on i Pads, and added an easily accessible camera shortcut from the lock screen.i OS 5 was the subject of criticism for i Phone 4S users, as the initial release had poor battery life, failures of SIM cards, and echoes during phone calls. i OS 5.1 was released on March 7, 2012 along with the new i Pad with retina display.Generally speaking, this is to turn off your abnormal i Phone, i Pad or i Pod, but you may stop the software update error by using this method.Refer to this post on how to force restart or reboot i Phone/i Pad.
More i OS 11 update problems and fixes and i OS 12 problems can be found here.
The operating system also added i Cloud, Apple's cloud storage service for synchronization of content and data across i Cloud-enabled devices, and i Message, Apple's instant messaging service.
For the first time, system software updates can be installed wirelessly, without requiring a computer and i Tunes.
However, some i Phone X/8 or i Phone 7/6s/6 users can't find the update via Settings Software Update.
Some other users will get update failure or "unable to install update" error.