ios 7.1.2 update stopped 1/3 way in

I have the same problem, I decided to update 2 iPhones and 2 iPads, all of them hang on the installation (apple with a progress bar under it) about 3/4 of the way to completion.

Apple, I think you be more careful when you release updates.

I'm afraid to do a hard reboot. What do you suggest?

I power cycled both my iPhone and iPad prior to starting the update, however they still stalled during the update. While I think it's prudent advice to restart your device before applying any update, in this case it didn't seem to help for me.

Just perform a hard reset using the power and home buttons, and you should be fine again.

Same thing happening here.Updated my iPhone and iPad at the same time, iPad finished half an hour ago and my iPhone 5S stuck at the progress bar. Not happy. I have a flight in a few hours.

I went on the upgrade 3 more devices without issue. iPhone 5 got stuck, iPhone 4, iPad Air, and iPad2 were all ok. As an experiment, I left 12 apps open on the iPad 2 and had no issues. The iPhone5 that got stuck had the least amount of free storage.

Man, you sure took a huge risk updating your iPhone before a flight. The best way to get out of it is to just do that hard reset. It will work thereafter, no files lost in the process.

Perform a hard reset as suggested by others on this thread, and you'll be fine. The device get's stuck on the second restart, which is just the normal restart of the device after the software already get's installed.

This is a quote from a poster over at MacRumors who claims to have spoken to Apple Tier II support:

I spoke with Apple Tier II Support (same issue with iPhone 5 and iPad Air) and confirmed this is a newly discovered issue. The above resolution was used to resolve my issue and all was fine, to include 7.1.2 successfully installing. They now have elevated this to developers. No negative affect on the installation other than a minor and temporary scare!

To address the person above about impatience, I waited over an hour and both the iPhone and iPad "froze" at the same stage of the second bar progression. First bar progression is the actual software update, second is the reboot phase. The second phase visually fails but is actually complete behind the scene. Don't waste your time with complete restore, as it is completely unnecessary.

I can confirm this as I too have spoken to Tier II, and Apple confirms this is a bug, but that a hard reset won't brick the device.

Cheers

It's OK to do hard reset after it is froze for a while. Everything is fine and your devices will be updated to 7.1.2. However, you can do manually download and update on your computer to confirm that your device is completely updated.

I was able to update my iPhone 5s quickly and easily, but my iPad 3 failed during the update and cannot restore via iTunes or the hard reset as described here. itunes reports an error 2000 "cannot find device." Good luck getting any help from Apple. I think they just bricked me, and apparently there is no support for this issue. Anyone got any fresh ideas? Is it a good time to consider jail-breaking? I apparently have a useless iPad now, so I'm open to just about anything that might make it possible for me to use it again someday.

As already posted in this thread, see this:

If you can't update or restore your iOS device

When you send a scanned PDF from exchange to your iPhone the PDF cannot be opened, you have to download the full message first.

It has been over an hour since my iPhone 4S is stuck at this 1/3rd level. And my power button does not work 😟

I'm currently at office. My phone is backed up to my home PC. I am wondering whether I should get the power button repaired before I go home or try to restore the phone after going home. I have been using Assistive Touch to side step the power button problem till now.

Hello,

Got the exact same issue on iPad Air and not on iPhone, the proposed solution worked on my side.

But, I hope that Apple will provide a fix as soon as possible as we are not sure that a file is not compromised even if the support II said no as they discovered the issue like us, when it was mass deployed.

Take care because you won"t be able to make hard reset if your iphone freeze during the update

The powerbutton+ home button reset method worked, stupid update made me skip a heartbeat