Monotouch: Downgrade to 3.2.6 (More Stable) Version

Since MT 4 version still has some bugs for WCF services, I would downgrade 开发者_开发问答it to 3.2.6.

I've recovered this old version but now it doesn't work because I have a more recent mono-framework version. What steps do I have to follow for disinstalling mono-framework 2.10.1_3 and recovering the old one?

Thank you. Regards.

Update: For those interested in, rembember to uninstall previous mono version. See this link: Uninstall Mono

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Old mono-framework will recognize, that you are installing an older version over an newer one and prompt you to continue