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How to Bypass Error 1013 on iPhone 4 when Downgrading iOS 4.3.5 to 4.3.3?

Guys, some of my native apps crashed for unknown reasons, so I was forced to restore my iPhone 4 to iOS 4.3.5 to fix it.  However, when I try to downgrade iOS 4.3.5 back to iOS 4.3.3 using my saved iOS 4.3.3 SHSH blobs I always end up with iTunes error 1013. I have tried to downgrade multiple times but I always get the same error. Any solution available to fix iTunes error 1013?

Asked by: Emil from Mobile, Alabama

Hello Emil, this error normally occurs when users are trying to downgrade and restore a damaged firmware file (IPSW) or it has something to do with the baseband compatibility and unrecognized IMEI. Anyway, to fix this error, you will need to use Semaphore’s standalone TinyUmbrella (Fix Recovery). This tool is capable to force kick your iPhone (iPad and iPod Touch) out of endless recovery mode in just a snap. Just simply follow the step by step guide posted below to fix iTunes 1013 error:

Step 1: First, you will need to download TinyUmbrella (Fix Recovery) for your Mac or Windows.

Step 2: Download Zlib1.dll from here and place it in the same location where fixrecovery43.exe is located.

Step 3: Then connect your iPhone 4 into the computer via USB cable and power OFF your device.

Step 4: Launch iTunes, downloaded fixrecovery43.exe and put your iPhone into DFU mode.

  • Press and hold the Power and Home button for 10 seconds.
  • Then release Power button after 10 seconds but continue holding the Home button for another 10 seconds.

Step 5: Now, Tiny Umbrella (Fix Recovery) will automatically detect your iPhone in DFU mode and it will immediately act to fix the error.

After you have successfully fixed and restored iOS 4.3.3 firmware on your device, you can follow these guides on how to jailbreak iPhone 4 on iOS 4.3.3 using Redsn0w 0.9.6rc16 or JailbreakMe 3.0.

Fix iTunes Error 1013 on iPhone 4

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