How To Update/Upgrade iPod, iPhone, iPad to iOS 5.1 using iTunes

 

This is the latest iOS release of Apple. Below are the steps to update to this latest version.









Requirements:

1. The device you want to update of course
2. iTunes (Latest Version 10.6)
3. USB Cable Connector

Steps:

1. Open iTunes.
2. Connect the device.
3. Back it up. To back up, right-click your device located at the left side of iTunes window then select Back Up. This is done to prevent the loss of your data if something goes wrong and also this back up will be used later for restoring.
4. Select your device again.
5. The Summary of your device should appear. Click Update.
6. If you have not yet downloaded the firmware (iOS 5.1), click Download and Update, if you have, click Update.
7. Wait for iTunes to do its thing (such as verify the software, back up, update then restore).

After that, you already have the latest iOS in your device. Good luck and enjoy! :)
For any problems, just comment.

How to Fix iTunes Error 3194 while Restoring Device/Updating to iOS 5 (iPod Touch, iPhone, iPad)?

View the List of All Errors here.

There are two ways of fixing this error. Some say that it can be fixed by TinyUmbrella but it did not work for me. So here is the other way.

1. Open iTunes.
2. Connect your device.
3. Unhide all your files and folders. Click here to learn how.
4. Go to your hosts file (which is located in this directory C:\Windows\System32\drivers\etc) and then open it with any Text Editor program you have in your computer and then erase the line #74.208.10.249 gs.apple.com. Finally, save it. 

5. Enter into recovery mode. Here's how: 

   a. Switch off your device.

   b. Press Sleep/Power button and Home button simultaneously until  for 15 seconds.

       The apple logo should appear and disappeas while doing this.

   c. Release Power button, continue holding Home button for 10 seconds until a pop up window appear in iTunes saying you have entered the recovery mode.

6. Proceed then click Restore > Restore and Update.

7. Wait for the device to restore and you are finished!

Some may experience stuck up in the iTunes window wherein it says "Restoring apps.." but the progress bar isn't progressing.
Just stop the process or kill the program and then enter the recovery mode again and restore. It will proceed on restoring your
music and videos. Restore your apps later instead.

Good luck! :)