I\'m a registered developer in apple. I have installed OSX Lion and i want to install XCode but i can download only viersion 4.0.2 which is incompatible for Lion. How to do this
You can find the DMGs for Xcode and other development tools on https://developer.apple.com/downloads/ (requires Apple ID to login).
You must login to have a valid session before downloading anything below.
Xcode 4.1: http://developer.apple.com/devcenter/download.action?path=/Developer_Tools/xcode_4.1_for_lion_21263/installxcode_41_lion.dmg
See this related post: How to download Xcode DMG or XIP file?