iphone - run app using xcode 4.6 in ios 4.3 simulator -

i trying run application in 4.3 simulator xcode 4.6. copy sdk simulator 4.3 @ path, builds cant run application in simulator. can solve problem? thank in advance

if using mac os 10.7.x , have upgraded xcode 4.6, have or download simulator 4.3 version. but, if using mac os 10.8.x, can not have simulator 4.3 version. reason 4.3 simulator on mac os 10.8.x crashed lot, apple has removed that.

check link:-
http://iphonedevsdk.com/forum/iphone-sdk-development/111568-what-happened-to-the-ios-4-3-simulator-in-xcode-4-6.html