How to Restore the Operating System on Your iPad
Restoring your operation system – Apple calls it the iOS – is equivalent to reformatting your hard drive on a MAC and PC and executing a factory restore. Restoring the iOS is not the same as updating it. An iOS restoration involves erasing everything on the iPad's flash drive and installing a fresh operating system. None of your files, settings, and apps will be retained. Executing an iOS restoration will require you to save all your files and apps on iTunes. Fortunately Apple makes this process much simpler with iTunes. If you are looking to take such drastic measures to fix an issue on the iPad, follow these steps:
1) Open iTunes on your computer and connect your iPad with the USB cable.
2) Click your iPad's icon in the source list. This is located on the left hand panel of iTunes.
3) In the summary area located in the right hand panel, click the Restore button.
4) iTunes will ask you if you want to backup the iPad's setting before doing a restoration. Since you are looking to executive a clean restoration, click "Do Not Backup."
5) A warning message will now appear. Click "Restore" again if you want to continue.
6) MAC users will now get a prompt asking for the administrator password.
7) iTunes will now begin restoring your iPad's operating system.
When iTunes has finished erasing and restoring the iOS, the setup assistant will ask you to enter your iPad's name and settings. Your iPad will now be in factory form and it's now up to you want you what apps, songs, and files you want to upload onto your iPad. Please be aware that you do not need to repurchase apps and music that you already bought previously. iTunes should have saved all purchased music and apps. If for some reason you are missing purchased apps, music, and video on iTunes; you can login to your iTunes store account and download purchased items again.
Manual Update Instructions
For those wanting to keep their current iOS settings while upgrading to the newest Apple iOS. Follow these instructions for a manual update:
1) Download the iOS IPSW file for your iPad or iPhone version from Apple.com
2) Open iTunes on your computer and connect your iPad / iPhone using the USB cable.
3) Depending on whether you run Windows or have a MAC, follow
Mac – Hold the Option key and then click on the "Check for Update / Update" button.
Windows PC – Hold the Shift key and then click on the "Check for Update / Update" button.
4) A Dialog screen will appear prompting you for the location of the IPSW file you downloaded. Find the file in the file browser and select the IPSW file.
5) iTunes will now use the iPSW file and update your iPad / iPhone to the new iOS version. This will take approximately 10 minutes.