I have installed SDK 2.1  and I want to install SDK 2.2 

Do I have to uninstall SDK 2.1 ?

Do I have to install SDK2.2 like installing SDK 2.1  ?

I think it should like android ,updated by some tools ,only put  SDK ‘tizen2.2′  or ‘tizen2.x’  into \tizen-sdk\platforms ,but I don’t know how to do

I tried to use \tizen-sdk\install-manager\InstManager ,it dosen’t work