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The iPhone grows by means of advances on cell phone technologies through software updates. The device's working system upgrades effortlessly when new features are accessible. If you dislike a new element or determine a downloaded application malfunctions on the new operating system, you can downgrade the installed software. Many owners who installed the iPhone Firmware 4.0 switched back to 3.1.3 to return the phone to its past setup.

Instructions

1 Download the 3.1.3 operating method from any third-party web site. Prior versions are not immediately available away from Apple's servers. The files, which arre in .ipsw format, can be found on diverse websites, including iClarified, iPhoneHeat and website.

2 Attach the iPhone to a computer. Wait for iTunes to launch. Launch iTunes manually if it does not launch automatically.

3 Right-click on the iPhone's icon. Select "Copy." When the backup is total, right-click again. Choose "Transfer Purchases" to ensure all recent information also downloads are saved.

4 Hold "Shift" plus click on "Restore." If you are on some Mac, hold the "Alt" key. Navigate to the .ipsw file you downloaded and double-click on it. Click on "Revive" again to affirm that you wish to erase all information on the iPhone and reinstall the operating system.

5 Wait with the restore method to finish. When prompted, choose the most recent copy to restore back to the iPhone. Allow the iPhone to fully sync to restore all original music, apps plus data.

Suggestions & Warnings

References

iPhoneFAQ: Is here a way to update/restore my iPhone in any selected version of iPhone firmware?

Resources. Unlock Iphone4 Iphone4 Unlock.

iClarified: Everywhere To Download iPhone Firmware Files Out of iPhoneHeat: Download iPhone Custom Firmware 3.1.3 (IPSW) iPhoneHelp: Firmware files Downloads for iPhone / iPod touch

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