When attempting to update to 4.2.1 on my iPad 16gb wifi it goes through the process of downloading the update and backs up the ipad then wipes it, when it attempts to do the restore i get the following... "The iPad cannot be restored at this time because the iPad software update server could not be contacted or is temporarily unavailable". I tried restarting, turning the ipad off then back on, disabling my firewall and anti-virus... any suggestions? I have a $500 paperweight at this point.. lol