iPad Mini stuck in iTunes logo (failed upgrade) I tried to update to iOS 8 today, and when I opened iTunes to do so, it also requested to update itself, as I thought it could handle both things (especially because I assumed it would update itself then, the iPad Mini). 

Now, the iPad is stuck in a connect to iTunes mode, if I try to open the iTunes while the iPad is connect, the iTunes won't open and if I connect it after the iPad doesn't appear as a device in iTunes. 

In the Device Manager it states that I have a unknown Device, and in Devices and Printers it is displayed as Apple Mobile Device USB Driver.

How can I get out of this mode and install the new OS ? I remember that when I had an iPhone 3g it could be done through getting the device into DFU. Is there an analog for it in iOS 7?
I had the same problem this morning. I tried to update my ipad mini to iOS 8 over the air (without connecting it to my laptop and iTunes), and it got stuck on the apple logo bootup screen.

The workflow described on the following webpage enable me to resolve the situation: http://www.iphonehacks.com/2014/01/fix-stuck-apple-logo-evasi0n7.html

Hope it'll work for you as well!