How do I download iOS 4.3 from my computer to my IPhone 4.3
How do download iOS 4.3 to my iphone 4?
iPhone 4, Windows XP Pro
Update it from iTunes on a computer as described at the bottom of this article; devices running an iOS version prior to 5.0 can't be updated straight from the device. It will be updated to the newest iOS release supported by the device’s hardware.
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