Q: Update 7.1.2 does not install after downloading for around an hour.  Wifi on, back up done, have space for update, turned off and on once completed but still doesn't seem to want to install. Help!

The 7.1.2 installer appears to have a flaw, where it apparently hangs on the final verification step after installation and never finishes. So when you force-restart the device, you may discover that you have 7.1.2 already.

Try resetting the iPad (hold the home and power keys down until the Apple logo appears - 15-20 sec).

Run software update again and do NOT interrupt it.

Barry

iPad: Unable to update or restore

http://support.apple.com/kb/ht4097

iTunes: Specific update-and-restore error messages and advanced troubleshooting

http://support.apple.com/kb/TS3694

If you can’t update or restore your iOS device

http://support.apple.com/kb/ht1808

iPad Stuck in Recovery Mode after Update

http://www.transfer-iphone-recovery.com/ipad-stuck-in-recovery-mode-after-update .html

iOS: Apple logo with progress bar after updating or restoring from backup

http://support.apple.com/kb/TS3681

 Cheers, Tom

Have you tried doing it thru iTunes with the iGadget connected to the computer?

I've done all my upgrades, iPhone and iPad, that way using my Mac. The installer gets downloaded and verified by iTunes on the computer before anything else happens, and then the upgrade process is careful and deliberately carried out onto the device. No grief or pain since the early days of iOS 6!

Besides the fact that the computer, any computer (capable of running iTunes), has vastly more powerful networking capabilities than any iGadget, the program will persist with the determination of a bulldog till it gets the installer downloaded properly.

Try this  - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.) No data/files will be erased. http://support.apple.com/kb/ht1430

iOS: Apple logo with progress bar after updating or restoring from backup

http://support.apple.com/kb/TS3681

 Cheers, Tom