There have been many who have ran into “Error 2003” and “Error 3200” during the iOS 5 update. There isn’t a clear reason why this happens but there is a solution for both.
Instead of updating, you will need to restore to iOS 5 which will install a fresh iOS onto your device. Be sure to have a backup of the iDevice before continuing so that you get all of your apps and settings back.
Fix Error 3002 & 3200
Important: be sure to remove any blocks for gs.apple.com in your hosts file or Sauriks server additions if you used in the past for jailbreaking purposes.
- Be sure you have installed iTunes 10.5
- Download iOS 5 IPSW that is specific to your device and save it somewhere easy to find.
- Open iTunes 10.5, and select your device from the sidebar
- Hold the Alt key (if you’re using OS X) or Shift (if you’re on Windows) on your keyboard, press the “Restore” button on iTunes and select the firmware file you downloaded.
- Let process finish
Restore old data back onto iDevice
- Select your device from the sidebar in iTunes 10.5
- Right click or option-click your device and click “restore from backup”
- Choose your most recent backup
- Let process finish
