Hardware & Software Requirement:
   – Hardware: Intel-based Macintosh, running Mac OS X 10.6 Snow Leopard
   – Software: iPhone SDK iOS 4.3 & Xcode 4.0.2
Apple Developer Account
   – http://developer.apple.com/programs/start/register/create.php
Download and Install Xcode 4.0.2
   – Xcode 4.0.2 includes iOS 4.3 SDK
   – uninstall a previous version of Xcode on the console window
     “sudo /Developer/Library/uninstall-devtools -mode=all”
   – install Xcode 4.0.2 (required Mac OS X 10.6.6)
Launch Xcode 4.0.2
   – open “Macintosh HD” (finder) and then go to >Developer>Applications>Xcode