HT1222 I have a softwre update on my iphone 4. but the button to download & Install is not lit for me to push.

Is anyone there?
I have a softwre update on my iphone 4. but the button to download & Install is not lit for me to push.

Over the air upgrades are only active with iOS 5 or later. You will ahve to upgrade using iTunes.
See the chart below to determine whether you can upgrade your device and what you can upgrade to. If you do not have a Software Update option present on your iDevice, then you are trying to upgrade to iOS 5 or higher. You will have to connect your device to your computer and open iTunes in order to upgrade.
IPhone, iPod Touch, and iPad iOS Compatibility Chart
     Device                                       iOS Verson
iPhone 1                                      iOS 3.1.3
iPhone 3G                                   iOS 4.2.1
iPhone 3GS                                 iOS 6.1.x
iPhone 4                                      iOS 7.0.x
iPhone 4S                                    iOS 7.0.x
iPhone 5                                      iOS 7.0.x
iPhone 5c                                     iOS 7.0.x
iPhone 5s                                     iOS 7.0.x
iPod Touch 1                               iOS 3.1.3
iPod Touch 2                               iOS 4.2.1
iPod Touch 3                               iOS 5.1.1
iPod Touch 4                               iOS 6.1.x
iPod Touch 5                               iOS 7.0.x
iPad 1                                          iOS 5.1.1
iPad 2                                          iOS 7.0.x
iPad 3                                          iOS 7.0.x
iPad 4                                          iOS 7.0.x
iPad Mini                                      iOS 7.0.x
iPad Air                                        iOS 7.0.x
=====================================
Select the method most appropriate for your situation.
Upgrading iOS
   1. How to update your iPhone, iPad, or iPod Touch
   2. iPhone Support
   3. iPod Touch Support
   4. iPad Support
     a. Updating Your iOS to Version 6.0.x from iOS 5
          Tap Settings > General > Software Update
     If an update is available there will be an active Update button. If you are current,
     then you will see a gray screen with a message saying your are up to date.
     b. If you are still using iOS 4 — Updating your device to iOS 5 or later.
     c. Resolving update problems
        1. iOS - Unable to update or restore
        2. iOS- Resolving update and restore alert messages

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