How can I restore iPhone with iTunes?

Use iTunes to restore your iPhone, iPad, or iPod to factory settings

When you restore your iOS device or iPod to factory settings, you'll also install the latest version of software. You can then set up your device as new, or restore from a backup.

Restoring iOS or iPod software deletes all your data and content from your device, including songs, videos, contacts, photos, and calendar info.

Before you restore your device

1. Make sure that you have the latest version of iTunes.
2. Use iTunes to back up your device. Transfer and sync any additional content to your computer.
3. If you're using iOS 6 or later, go to Settings > iCloud and turn off Find My iPhone.

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 your device to factory settings and delete all data and content. iTunes will download the device software file and restore your device.
   
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. Follow the steps in the device Setup Assistant. You can set up your device as new or use a previous backup. If you restored an iOS device that has cellular service, it will activate after you finish setting up your device. 
   2;.;.;.; restoring iphone using firmware ""'

6. Download new released iOS 8.3 Now!

   This site provides download links to ipsw firmware files for all Apple devices including iPhone 6 Plus, 6, 5S, 5C, 5, 4S, 4, 3GS, 3G, 2G; iPad Air 2, Air, 4, 3, 2, 1; iPad Mini 3, 2 with Retina, 1G; iPod Touch 5th, 4th, 3rd, 2nd, 1st Generations; Apple TV 3rd, 2nd Generations. Firmware files can be very large in some cases, so it may take some time for your download to complete. All firmware files are hosted on an Apple Inc. server.

7. Checking Firmware Version

   Use the following steps below to check which version of firmware is installed on your device. Tap Settings > Tap General > TapAbout > Your current running iOS firmware will be listed next to Version.

   How to Restore or Update your Apple Device

   Restoring your device will delete all data and content, including videos, songs, photos, contacts, and other information, and will restore all settings to their factory condition. Updating your device doesn't affect your content, settings or other information. In either case, backing-up your content in iTunes or iCloud is recommended.
   After downloading the desired firmware, connect the device to your computer and select it in iTunes. Mac users hold down theOption key, while Windows users should hold down the Shift key. Then click on the Update or Restore button, select the IPSW file you recently downloaded and click Choose. Your device should now begin to update. Take note that certain browsers may change the ipsw-file into a zip-file. If this should occur, just rename it to end in .ipsw and iTunes will recognize it.
8. you can download any firmware suits your iphone from here download firmware

• Twitter
• Facebook
• Google
• Tumblr
• Pinterest