Currently Being ModeratedFeb 1, 2013 11:24 AM (in response to Sord15)
Error -1 is a bad hardware error of the baseband chip. Try to Restore your iPhone on a different computer. If still problem, and if there is Warranty or AppleCare make Genius reservation or set up Service and take or send to Apple for resolution. If no coverage, the only fix will be a lucky Restore with iTunes, keep trying if you have the time, try other computers.