While updating my iphone i disconnect usb cable
When the update process is complete, i Tunes may not give you any notification.(This is under the "STORE" heading in the left hand menu in i Tunes.) The rotating arrows show you that the download is in progress, and the number tells you how many items are being downloaded.Once the software has been downloaded, you'll see a message that i Tunes is extracting the new update and another says "Preparing i Phone for software update." You'll also see a notification that i Tunes is verifying the software update with Apple, and you may see drivers automatically installing.Note: Apple's updater is likely to suggest additional software that you can download (such as the Safari browser); none of this is necessary.
You can download it if you like, but you don't need it to update i Tunes.
Did you know that Apple often updates i OS, adding new features and cool new tools?