iTunes is a essential and critical tool for your iOS devices. Today in Apple support forum many users complained that the Apple iTunes update servers are down. This will cause your iOS devices to go blank and not unusable. This inturn needs the support of the Apple Service center to get back your device.
Now when the iOS devices are connected the iTunes displays
There is a problem with your device.
We’re sorry, the device you connected may be damaged and cannot be activated for service. We recommend you visit your nearest Apple Store for more information. To find your nearest Apple Store, click here.
So we advise you not to update or restore your devices. Here is a proof of what happening all around the world.