This article introduces to you Apple software itunes error 2009 solution tutorial, what to do if an unknown error 2009 occurs when updating iPad/iPhone firmware using iTunes recovery, the following provides you with relevant solutions.

Itunes error 2009 problem symptoms:

When some users use iTunes to restore iPhone, iPad or iPod touch, the recovery process may stop. , a warning message "Unknown error occurred while restoring iPhone" is displayed in iTunes, followed by error number 2009.

The "Connect to iTunes" screen may also be displayed on the device:

Reasons for occurrence:

Software conflicts or system boot file errors due to frequent jailbreaking and flashing < /p>

Solution: (Here we take Redsn0w 0.9.6rc8 and iOS4.2.1 as examples)

Step 1: Preparing the flashing environment

1. Download the iOS4.2.1 firmware corresponding to your device.

　2. Download Redsn0w 0.9.6rc8

　3. Unzip the downloaded Redsn0w to your computer, and double-click the unzipped program to run it (at this time you iTunes running on your computer will be automatically closed, please keep iTunes closed and do not restart it).

4. Click the "Browse" button on the Hongxue interface and select the iOS 4.2.1 firmware downloaded to the computer.

Click the "Browse" button

Select 4.2.1 firmware

5. Hongxue will verify the selected firmware

Correctly identify 4.2 .1 Firmware

6. After successful verification, click the "Next>" button to enter the next step. Hongxue will patch the firmware. Please wait patiently for the operation to complete

Start Patch the firmware

7. After patching, redsn0w will enter the jailbreak option interface. In the interface, you only need to check the Install Cydia option and click "Next>" to proceed to the next step

Just check the Install Cydia option

8. Make sure your device is turned off and connected to your computer, then click "Next".

9. Follow the order of each line of words that light up on the interface to put your device into DFU mode.

　(1) Press the power button on the iPhone/iPad/iPod Thouch and hold it for 3 seconds

　(2) While keeping the power button pressed, press the button on the iPhone Hold the Home button (square button) for 10 seconds

(3) Release the power button, keep the Home button pressed for 15 seconds and then release it

10. Click Finish and close Redsn0w 0.9 .6rc8.

Step 2: Restore 4.1 firmware

　1. Open umbrella and click Start ISS Server. (Note: Using TinyUmbrella requires a java environment)

2. Open iTunes, and it will prompt that an iPhone that needs to be restored is detected. Press the shift key on the keyboard and click Restore, and select the 4.1 firmware.

3. Unknown error 1004 will occur at this time.

Step 3: Restore 4.2.1 firmware

　1. Unplug the USB and restart iTunes.

2. Reconnect the phone and computer using USB, open iTunes, and be prompted again to detect the iPhone that needs to be restored. Press the shift key on the keyboard and click Restore, and select the corresponding 4.1 firmware.

3. An unknown error error 1004 occurs. If a 1600 or 1603 error occurs, you can turn off the small umbrella first, reopen the small umbrella and click Kick Device Out of Recovery. If there is no response, try a few more times.

4. The phone will automatically re-flash, and will automatically restart and restore the activation state after completion.