How to Update the iPhone Software
No matter what version of iOS software was on your iPhone when you bought it, incremental improvements and fixes likely have been released for the software since that time. Keep your iPhone iOS software up to date to avoid potential security risks and to take advantage of new features. Update the iPhone software using iTunes on your computer.
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Instructions
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Launch iTunes on your computer. Click the "iTunes" menu at the top of the screen and select "Check for Updates" from the drop-down menu. If there is an update to iTunes, install it before continuing.
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Connect the iPhone to the computer using the data cable that came with the device. The name of the iPhone appears under "Devices" in the left navigation panel of iTunes.
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Click on the iPhone's name to select it and see the iPhone Summary page. Click "Check for Updates" on the Summary page. If there is an update for your device, iTunes notifies you.
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Download the upgrade to install the newest version of software for your iPhone. Follow any onscreen prompts. Do not disconnect the iPhone until the process is complete.
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References
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Comments
View all 16 Comments-
hi! I already upload the viber in my iphone4 but I cannot use it. when ever I recieve a message it show I need to update it. I check it on the app and it doesn't show there. what should I do so I can use it. thank u
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I have the very first iphone and I downloaded the new itunes but it doesn't give me any way to update my phone any ideas.
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hi my itunes is not conectin 2 d net.
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thaaaaaaaaaaaanks
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Make sure you have the latest version of iTunes you need 10.1 or greater to support the OSv 4
