Alongwith the launch of iOS 5 a huge number of Apple Device users are upgrading their devices and significant number of users are facing iTunes Error 3002, 3200 & 11 which can be avoided on both Mac and Windows by following the requirements mentioned in later part of the post.
If you are not upgrading the iPhone 4, 3GS, iPad 2 and iPod Touch 4 by simply pressing the upgrade button on iTunes rather you are using the shift+restore option to upgrade then you would face the Error 3002, 3200 & 11. Therefore in order to fix this Error you need to make sure that following points are followed,
- Check host files that they are pointing to gs.apple.com rather than localhost in case TinyUmbrella was used on your PC or Mac. Host files are located in C:>Windows>System32>Drivers>etc so you can change the host from 127.0.0.1 to gs.apple.com and later check it by typing gs.apple.com in Browser URL to see that its gives Apple 404.
- Make Sure that you are using the latest iTunes 10.5 which can be downloaded from here.
- Download the stock iOS 5 IPSW if you are Factory unlocked from here and software unlock can upgrade while preserving the baseband using Redsn0w from here.
- Launch iTunes and press Shift+Restore by pointing to the downloaded IPSW