How to Fix iPhone 3GS Restore Errors 1600, 1601, 11, and 1394
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idontknowwhy • December 9, 2012 at 7:58am
I am trying to restore my iPhone 3GS from iOS 4.1 to 4.3, but I am receiving iTunes errors 1600, 1601, 11, and 1394. I have attempted to use RedSn0w, iREB, and TinyUmbrella in both recovery and DFU mode, but the restore still fails. Sometimes it gets stuck on the preparing iPhone for restore message while the screen flickers. How can I resolve these errors and restore my device?
Answers
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iClarified • January 12, 2026 at 4:08am
To fix iTunes errors 1600, 1601, 11, and 1394 on an iPhone 3GS, follow these troubleshooting steps. First, ensure you are using a high-quality USB cable and connecting it directly to your computer motherboard ports rather than a USB hub. Error 1601 often relates to the Apple Mobile Device Service or USB communication issues. 1. Use a tool like iREB or RedSn0w to enter Pwned DFU mode. This is often necessary when restoring to custom firmware or downgrading, as it prevents iTunes from performing certain hardware checks that trigger 16xx errors. 2. Check your computer hosts file. If you have used TinyUmbrella in the past, your hosts file might be redirecting gs.apple.com to Cydia servers. Open your hosts file as an administrator and remove any lines containing apple.com. 3. Try a different computer. If the error persists across different cables and ports, the issue might be with the specific USB controller on your PC or Mac. 4. If the phone is stuck in a boot loop or recovery mode, you can also try using TinyUmbrella to kick it out of recovery or use the Fix Recovery feature in RedSn0w.
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idontknowwhy • December 13, 2012 at 2:48pm
This issue can sometimes be resolved by physically disconnecting the battery from the logic board for a few minutes and then reconnecting it before attempting the restore again.