Downloading xcode 4 - will i be able to stick with iOS4.2 simulator?

I want my iOS simulator to stay at 4.2, but i do want to upgra开发者_开发百科de to XCode 4 also. Would i be able to upgrade to XCode 4 and stay at iOS4.2?

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XCode 4 offers multiple versions of the simulator to test in. You can choose 4.1, 4.2, or 4.3 for the iPhone simulator, and 4.2 or 4.3 for the iPad.

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I don't understand why you want your sim to stay at 4.2. It doesn't offer you anything. If you think you can use it for compatibility testing, you'd be sorely mistaken. Many things don't work right in the sim, and certainly behaviours are different in some cases. It is no suitable substitute for having a device with a particular firmware version on (the lowest you want to support at a minimum).

Short answer: No it will upgrade your sim. But no, that shouldn't ever be a problem.