To fix iTunes error 4013, you must put your iDevice into DFU mode using the following instructions:

Step 1

Connect your iDevice to your PC or Mac via USB cable and launch iTunes.

Step 2

Hold down the Home+Power button for 10 seconds.

Step 3

After 10 seconds, release the Power button but keep holding the Home button until iTunes detect your iPhone in recovery mode.

Step 4

Once your iDevice is in DFU mode, you should see nothing on its screen. It should be completely blank.

Step 5

To see full instruction click here

iTunes Recovery Mode Fix iTunes Error 4013 During Custom IPSW Restore [How To Guide]

Even if your iDevice is in DFU mode, iTunes will detect it as a recovery mode device and will display a message as shown in the above screenshot. As soon as you see the above message, restore custom IPSW and hopefully this time you will not get iTunes Error 4013.

To fix iTunes error 3194, you must put your iDevice into DFU mode using the following instructions:

Step 1

Connect your iDevice to your PC or Mac via USB cable and launch iTunes.

Step 2

Hold down the Home+Power button for 10 seconds.

Step 3

After 10 seconds, release the Power button but keep holding the Home button until iTunes detect your iPhone in recovery mode.

Step 4

Once your iDevice is in DFU mode, you should see nothing on its screen. It should be completely blank.

Step 5

To see full instruction click here

iTunes Recovery Mode Fix iTunes Error 3194 During Custom IPSW Restore [How To Guide]

Even if your iDevice is in DFU mode, iTunes will detect it as a recovery mode device and will display a message as shown in the above screenshot. As soon as you see the above message, restore custom IPSW and hopefully this time you will not get iTunes Error 3194.

To fix iTunes error 1611, you must put your iDevice into DFU mode using the following instructions:

Step 1

Connect your iDevice to your PC or Mac via USB cable and launch iTunes.

Step 2

Hold down the Home+Power button for 10 seconds.

Step 3

After 10 seconds, release the Power button but keep holding the Home button until iTunes detect your iPhone in recovery mode.

Step 4

Once your iDevice is in DFU mode, you should see nothing on its screen. It should be completely blank.

Step 5

To see full instruction click here

iTunes Recovery Mode Fix iTunes Error 1611 During Custom IPSW Restore [How To Guide]

Even if your iDevice is in DFU mode, iTunes will detect it as a recovery mode device and will display a message as shown in the above screenshot. As soon as you see the above message, restore custom IPSW and hopefully this time you will not get iTunes Error 1611.

To fix iTunes error 21, you must put your iDevice into DFU mode using the following instructions:

Step 1

Connect your iDevice to your PC or Mac via USB cable and launch iTunes.

Step 2

Hold down the Home+Power button for 10 seconds.

Step 3

After 10 seconds, release the Power button but keep holding the Home button until iTunes detect your iPhone in recovery mode.

Step 4

Once your iDevice is in DFU mode, you should see nothing on its screen. It should be completely blank.

Step 5

To see full instruction click here

iTunes Recovery Mode Fix iTunes Error 21 During Custom IPSW Restore [How To Guide]

Even if your iDevice is in DFU mode, iTunes will detect it as a recovery mode device and will display a message as shown in the above screenshot. As soon as you see the above message, restore custom IPSW and hopefully this time you will not get iTunes Error 21.