iphone force upgrade to 3.2 instead of 4.0

My iPhone is running OS 3.1.3. I am running xcode 3.2.3 which only supports the iPhone OS 3.2 and 4.0, so I need to upg开发者_StackOverflow中文版rade my iPhone's OS to 3.2. (I don't want to upgrade to 4.0 for obvious reasons.)

But in itunes, when I click "check for updates" it detects the existence of iOS 4.0 so it doesn't offer me to upgrade to 3.2, only 4.0. Is there a way to force the upgrade to 3.2?

The other possible solution I see is installing a second version of xcode (3.2.2 or something which supports the older versions of the iPhone OS?)

God I hate apple and their compatibility issues.

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You can't install 3.2 on iPhones / iPod Touches, since 3.2 is for iPad only.

You could try to change the "iPhone OS Deployment Target" to 3.1.3 in the Project Info. See also Where can I download the older iPhone OS 3.1 SDK? for some links to older SDKs if you need them.