Restore to factory settings

Use iTunes to restore your iPhone iPad or iPod to factory settings
Restore your device

1.Connect your device to your computer using the cable that came with it.
2.Select your iPhone, iPad, or iPod when it appears in iTunes.
3.In the Summary panel, click Restore.
4.Click restore again to confirm that you want to restore device to factory settings and delete all data and content.
5.After your device is restored to factory settings, it will restart. When it does, you'll see the "Slide to set up" welcome screen.

Restoring iPod to factory settings Learn how to restore iPod, iPod classic, iPod mini, and iPod nano to factory settings.

Background

It's important to understand the difference between updating and restoring. Updating simply installs the software that controls iPod and does not affect the songs and files stored on iPod's disk. Restoring erases the iPod's disk and restores iPod to its original factory condition.
Warning: Because restoring erases all the songs and files on iPod, back up any files you've saved on the iPod disk. All of your songs, videos, podcasts, audiobooks, and games can be loaded back to your iPod provided that you have them stored in your iTunes Library. If you use the Nike + iPod Sport Kit, see this document for more information.
Note: See this article if you need to restore an iPod shuffle.

How to restore iPod

1. Verify that you have an active Internet connection, because you may need to download new versions of the iTunes and iPod Software.
2. Download and install the latest version of iTunes if necessary.
3. Open iTunes. Connect your iPod to your computer using the USB or FireWire cable that came with your iPod.
4. After a few moments, your iPod will appear in the Source panel in iTunes.
5. Select your iPod in the Source panel. You will see information about your iPod appear in the Summary tab of the main iTunes window.
6. Click Restore.
7. If you are using a Mac, you will be asked to enter an administrator's name and password.
8. A progress bar will appear on the computer screen, indicating that stage one of the restore process has begun. When this stage is done, iTunes will present one of two messages with instructions specific to the iPod model you are restoring.
   • Disconnect iPod and connect it to iPod Power Adapter (typically applies to older iPod models).
   • Leave iPod connected to computer to complete restore (typically applies newer iPod models).
9. During stage two of the restore process, the iPod displays an Apple logo as well as a progress bar at the bottom of the display. It is critical that the iPod remain connected to the computer or iPod power adapter during this stage.
   Note: The progress bar may be difficult to see, because the backlight on the iPod display may be off.
10. After stage two of the restore process is complete, the iTunes Setup Assistant window will appear. It will ask you to name your iPod and choose your syncing preferences, as it did when you connected your iPod for the first time.

Restoring iPod to factory settings
Learn how to restore iPod, iPod classic, iPod mini, and iPod nano to factory settings.
Background
It's important to understand the difference between updating and restoring. Updating simply installs the software that controls iPod and does not affect the songs and files stored on iPod's disk. Restoring erases the iPod's disk and restores iPod to its original factory condition.
Warning: Because restoring erases all the songs and files on iPod, back up any files you've saved on the iPod disk. All of your songs, videos, podcasts, audiobooks, and games can be loaded back to your iPod provided that you have them stored in your iTunes Library. If you use the Nike + iPod Sport Kit, see this document for more information.
Note: See this article if you need to restore an iPod shuffle.
How to restore iPod
Verify that you have an active Internet connection, because you may need to download new versions of the iTunes and iPod Software.
Download and install the latest version of iTunes if necessary.
Open iTunes. Connect your iPod to your computer using the USB or FireWire cable that came with your iPod.
After a few moments, your iPod will appear in the Source panel in iTunes.
Select your iPod in the Source panel. You will see information about your iPod appear in the Summary tab of the main iTunes window.
Click Restore.
If you are using a Mac, you will be asked to enter an administrator's name and password.
A progress bar will appear on the computer screen, indicating that stage one of the restore process has begun. When this stage is done, iTunes will present one of two messages with instructions specific to the iPod model you are restoring.
Disconnect iPod and connect it to iPod Power Adapter (typically applies to older iPod models).
Leave iPod connected to computer to complete restore (typically applies newer iPod models).
During stage two of the restore process, the iPod displays an Apple logo as well as a progress bar at the bottom of the display. It is critical that the iPod remain connected to the computer or iPod power adapter during this stage.
Note: The progress bar may be difficult to see, because the backlight on the iPod display may be off.
After stage two of the restore process is complete, the iTunes Setup Assistant window will appear. It will ask you to name your iPod and choose your syncing preferences, as it did when you connected your iPod for the first time.

If you enter the wrong passcode repeatedly on an iPod Touch, it will display a message that says "iPod is disabled." At first, the iPod will only be disabled for a minute, but if you continue to enter the wrong passcode, it will become disabled for longer periods of time, and finally, you will need to connect it to the computer with which you last synced it. From here, you will need to restore the iPod Touch to factory settings.

Open iTunes. Click "iTunes" in the upper-left corner, then select "Check for Updates" to ensure you have the latest version. Connect your iPod Touch to your computer with the USB 2.0 docking cable. Click your iPod's name under "Devices" on the left-hand side of the iTunes browser. Click the "Summary" tab. Click "Restore." Follow the prompts in the dialog box that appears to finish the restore. Your iPod will return to factory settings. Choose to set up the iPod as a new iPod or from a backup in the screen that appears when the restore is complete.

The iPod model A1236 is the iPod 3rd generation Nano. This specific model Nano is characterized by its small, square shape; the models before and the models after are long and narrow. If you find that some files will not open on the iPod or you continuously receive errors, you have two different options of trying to correct this issue. You can reset, or restart, the iPod, or you can reset the iPod to its factory default settings. You will lose all of your information if you choose to restore the device to its factory settings.

Open iTunes on your computer and connect your iPod to the computer using the iPod USB cable. Connect the small side of the cable to an open USB port on your computer, and connect the large side to the bottom of your iPod. Select the Nano device on the left side of the window. Click the "Restore" button within the devices "Summary" tab and confirm that you want to restore the iPod to its factory settings. The restoration process begins after you confirm. Wait for the progress bar to complete. The restore will be finished when you see the "iTunes Setup Assistant" appear on your computer screen. Reset with the Click Wheel Slide the "Hold" switch to the on position, and then to the off position. Press and hold the center button and the "Menu" button at the same time. Hold the buttons for six to eight seconds until the Apple logo appears. The iPod will reset after the logo appears.

Step 1:
If you enter the wrong passcode repeatedly on an iPod Touch, it will display a message that says "iPod is disabled." At first, the iPod will only be disabled for a minute, but if you continue to enter the wrong passcode, it will become disabled for longer periods of time, and finally, you will need to connect it to the computer with which you last synced it. From here, you will need to restore the iPod Touch to factory settings.

Open iTunes. Click "iTunes" in the upper-left corner, then select "Check for Updates" to ensure you have the latest version. Connect your iPod Touch to your computer with the USB 2.0 docking cable. Click your iPod's name under "Devices" on the left-hand side of the iTunes browser. Click the "Summary" tab. Click "Restore." Follow the prompts in the dialog box that appears to finish the restore. Your iPod will return to factory settings. Choose to set up the iPod as a new iPod or from a backup in the screen that appears when the restore is complete.

you might have to reset it to factory settings

The 4th generation iPod is a portable media device that can play music, videos, and display photos.

Occasionally, you may run into issues with the iPod where the player has trouble working.

Restoring your iPod to its factory settings will often correct any software issues the player may have by wiping all of the data off of the iPod, and restoring its software to its original condition.

Restoring your 4th generation iPod can be done in just a few minutes, and requires the help of your computer.

Connect your iPod to your computer using the included USB cable, just as if you were going to sync it to add music or other data.

Launch iTunes if it does not launch automatically, and select your 4th generation iPod from the list of devices on the left side of the screen.

This will launch information about your iPod in the main iTunes window.

Click the "Restore" button in the middle of the iTunes window to begin restoring your 4th generation iPod to its factory settings.

Your computer may ask you to enter an administrative username and password to continue. A progress bar will then appear letting you know the status of the restore.

Wait for the progress bar on the screen to finish and then disconnect your 4th generation iPod.

The iPod is now restored to its factory settings.

You can reattach the iPod to your computer and set it up again, just as you did the first time you used it.

hope this helps

also you could try This works on iPod 5th gen
click start control panel scroll to folder options tick in the box to show hidden files and holders

connect your Ipod to your computer


click start click click on you Ipod to open

then go Ipod controls device there should be a folder saying locked

right click select rename to open or delete the folder your Ipod should now be open

Hey here is an apple article about your error 1439....

• Last Modified: October 01, 2008
• Article: TS1372

• Old Article: 304508

SymptomsWhen restoring or updating an iPod in iTunes 7 or later, you may see a dialog reporting "An unknown error has occurred" followed by the error number 1415, 1417, 1418, 1428, 1429, 1430, 1436 or 1439.
Products Affected
iTunes 7 for Mac, iTunes 7 for Windows, iPod nano, iPod shuffle, iPod mini, iPod, iTunes 8 for Windows, iTunes 8 for Mac
ResolutionIf you are experiencing these errors, begin by updating to the latest version of iTunes. When you have the current version of iTunes, try the following:

• Disconnect and reconnect your iPod and then attempt to restore.
• Restart your computer and then attempt to restore your iPod.
• Disable or Enable Disk Use on your iPod and then attempt to restore.
• Try connecting your iPod to a different USB port and then attempt to restore.
• Remove any third-party USB devices you have connected to your computer (it is not necessary to remove your keyboard or mouse).
• If you use Windows, re-register .dll files as described in article iTunes displays -50 error message when syncing iPod on Windows XP
• For Windows users, update or reinstall your Windows USB drivers.

I hope this helps your issue. :) CHEERS

I just checked the apple site. To reset an iPod turn the on/off switch on and off and then hold down the menu and center button until you see the apple symbol. According to apple, that should reset it.

Here is what I was able to find on the apple web site. I hope it works for you. Restoring iPod to factory settings Learn how to restore iPod, iPod mini, and iPod nano to factory settings. If you need to restore an iPod shuffle, click here. Background It is important to understand the difference between "update" and "restore". Update simply installs the software that controls iPod and does not affect the songs and files stored on iPod's disk. Restore erases the iPod's disk and restores iPod to its original factory condition. Warning: because Restore erases all of the songs and files on iPod, make sure to back up any files you've saved on the iPod disk. All of your songs, videos, podcasts, audiobooks, and games can be loaded back to your iPod provided that you have them stored in your iTunes Library. If you use the Nike + iPod Sport Kit, see this document for more information. -------------------------------------------------------------------------------- How to restore iPod Ensure that you have an active Internet connection as new versions of iTunes and iPod Software may need to be downloaded to your computer. Download and install iTunes 7.0 or later if you do not already have it installed. Open iTunes, and then connect your iPod to your computer using the USB or FireWire cable that came with your iPod. After a few moments, your iPod will appear in the Source panel in iTunes. Select your iPod in the Source panel and you will see information about your iPod appear in the Summary tab of the main iTunes windows. Click the Restore button. You will be prompted with one or more restore options that may prompt iTunes to automatically download the latest iPod Software. The 4 possible restore options are: Restore Option 1: Restore - Restores with same iPod Software version already on iPod. Restore Option 2: Use Same Version - Restores with same iPod Software version already on iPod even though a newer version is available. Restore Option 3: Use Newest Version - Restores with the latest iPod Software available. Restore Option 4: Restore and Update - Restores with the latest iPod Software available. If you are using a Mac, a message will appear prompting you to enter an administrator?s name and password. A progress bar will appear on the computer screen indicating that the first stage of the restore process has started. When this stage is completed, iTunes will present one of two messages on screen with instructions specific to the iPod model you are restoring. Restore Instruction 1: Disconnect iPod and connect it to iPod Power Adapter (typically applies to older iPod models). Restore Instruction 2: Leave iPod connected to computer to complete restore (typically applies newer iPod models). During the stage 2 of the restore process, the iPod will show an Apple logo as well as a progress bar at the bottom of the display. It is critical that the iPod remains connected to the computer or iPod Power adapter during this stage. Note: The progress bar may be difficult to see since the backlight on the iPod display may be off. After stage 2 of the restore process is complete and the iPod is connected to the computer, the iTunes Setup Assistant window will appear asking you to name your iPod and choose your syncing preferences similar to when you connected your iPod for the first time. Here is the link to where I got this info: http://docs.info.apple.com/article.html?artnum=60983