MAKE SURE TO BACKUP YOUR DEVICE BEFORE UPGRADING.
1. Download the IOS 5.1 Firmware directly from Apple by clicking on the links below, save the file to your desktop:
iOS 5.1 (build 9B176) is compatible with iPad 1, iPad 2, iPhone 3GS, iPhone 4, iPhone 4S, iPod touch 3rd & 4th gen, and iPad 3. Additional builds are available for Apple TV 2 and Apple TV 3.- iPad 1
- iPad 2 Wi-Fi
- iPad 2 GSM (AT&T)
- iPad 2 CDMA (Verizon)
- iPad 2,4
- iPhone 3GS
- iPhone 4 GSM (AT&T)
- iPhone 4 CDMA (Verizon)
- iPhone 4S
- iPod touch 3G
- iPod touch 4G
- iPad 3 Wi-Fi
- iPad 3 GSM
- iPad 3 CDMA
- Apple TV 2 (9B179b1)
- Apple TV 3 (9B179b1)
2. After downloading the desired firmware, you can shift-click (PC) or option-click (Mac) the "Update" button in iTunes. A file dialog will open and let you choose the downloaded ipsw-file from your desktop.
3. Proceed with the upgrade as usual.
4. If you get Error -3002 at this point, try to do a Restore, rather than an Upgrade - remember to shift-click (or option-click on a Mac).
Please let me know if you have any issues with this procedure in the comments section below.
Check this post for similar solutions for iOS 5: http://obscureport.blogspot.com/2011/10/solution-for-ios-5-download-problems.html
Check this post for similar solutions for iOS 5: http://obscureport.blogspot.com/2011/10/solution-for-ios-5-download-problems.html
