I have 6 remaining iPads to update to iOS7. They will not update. If it can be done to facilitate the update I have done it (???) I continue to receive the "Unable to Check for Update" error each time I attempt to update. This is not because Apple's servers are busy because every other iPad has updated. I have tried OTA and iTunes. I have erased, reset and restored. I have erased and restored under the same device ID, and I have erased and setup as a new iPad. I have tried different Wi-Fi nodes. I have used varying DNS settings. I haven't bounced one of the wall yet but that could happen soon. Please, any suggestions would be greatly appreciated.