4 Replies Latest reply: Mar 27, 2013 1:32 PM by wjosten
Mariam sheeza Level 1 Level 1 (0 points)

I'm having iPhone 3GS with some old OS due to which I am unable to download any app etc. I want to know that how can I update my Os?

iPhone 3GS, iOS 3.0.1
  • 1. Re: How to change OS of iPhone 3GS?
    pdroth Level 5 Level 5 (5,070 points)

    You will have to update it using iTunes.

  • 2. Re: How to change OS of iPhone 3GS?
    bhazel Level 4 Level 4 (3,495 points)

    plug it in to the computer then open up itunes

  • 3. Re: How to change OS of iPhone 3GS?
    Kappy Level 10 Level 10 (226,855 points)

    See the chart below to determine whether you can upgrade your device and what you can upgrade to.


    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

    iPhone 4                                      iOS 6.1

    iPhone 4S                                    iOS 6.1

    iPhone 5                                      iOS 6.1


    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

    iPod Touch 5                               iOS 6.1


    iPad 1                                          iOS 5.1.1

    iPad 2                                          iOS 6.1

    iPad 3                                          iOS 6.1

    iPad 4                                          iOS 6.1

    iPad Mini                                     iOS 6.1




    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

  • 4. Re: How to change OS of iPhone 3GS?
    wjosten Level 10 Level 10 (93,305 points)

    If you have an iPhone 3GS, follow the directions here:




    iOS 6.1.3 will be installed on your phone. This update, for you, is an erase/restore deal, so make sure all of your data is on your computer before you attempt to update.