ios 8.0.1 - download completed but unable to install

I downloaded iOS 8.0.1, tried couple of times - 'Install Now', it asks me to enter passcode, then it asks me to accept 'Terms and Conditions', once accepted it shows message - 'Verifying update...', after some time it shows message:

Unable to verify update

iOS 8.0.1 failed verification because you are no longer connected to the Internet

Though I am connected to Internet :(

I am trying to upgrade it on iPad mini - retina display.

Any clues?

Apple revoked iOS 8.0.1 last night after issues with iPhone 6 models were revealed.

The installation is failing as the device can't verify the download is correct as iOS 8.0.1 is no longer available.

To delete the download, go to: Settings app -> General -> Usage -> Manage Storage

Find the iOS 8.0.1 option, select it and tap delete.

Finally, go back to the Software Update screen and it will show iOS 8.0 as up to date.

8.0.1 was removed last night from Apple's servers. To fix your issue without having to restore the phone, follow the instructions: here:

Turn off Find my iPhone via Settings > iCloud. Download iOS 8 for iPhone 6 or iPhone 6 Plus. Make sure you're on the latest version of iTunes. Go to About and then Check for Updates or visit iTunes.com. Launch iTunes on your Mac or PC. Connect your iPhone 6 or iPhone 6 Plus to iTunes via Lightning to USB cable. Hold down Option (Mac) or Shift (Windows) click on "Check for Update". Choose the iOS 8 firmware file (.ispw) you downloaded in step 2. Let iTunes do its thing. Once you're back up and running, Turn Find my iPhone back on.