xcode and ios 各个版本和下载地址

使用app store的帐号登录后，直接敲地址可下载：
（苹果已经删除了3.1.2以前的版本）
记个旧版iOS SDK下载地址

iPhone SDK 2.2.1 : http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_for_iphone_os_2.2.1__9m2621a__final/iphone_sdk_for_iphone_os_2.2.19m2621afinal.dmg
iPhone SDK 3.0 with Xcode 3.1.3 – Leopard : http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.0__final/iphone_sdk_3.0__leopard__9m2736__final.dmg
iPhone SDK 3.0 with Xcode 3.2 – Snow Leopard :  http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.0__final/iphone_sdk_3.0__snow_leopard__final.dmg
iPhone SDK 3.1 with Xcode 3.1.4 – Leopard : http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.1__final/iphone_sdk_3.1_with_xcode_3.1_final__leopard__9m2809.dmg
iPhone SDK 3.1 with Xcode 3.2.1 – Snow Leopard :  http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.1__final/iphone_sdk_3.1_with_xcode_3.2_final__snow_leopard__10a432.dmg
iPhone SDK 3.1.2 with Xcode 3.1.4 – Leopard : http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.1.2__final/iphone_sdk_3.1.2_with_xcode_3.1.4__leopard__9m2809.dmg
iPhone SDK 3.1.2 with Xcode 3.2.1 – Snow Leopard :  http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.1.2__final/iphone_sdk_3.1.2_with_xcode_3.2.1__snow_leopard__10m2003.dmg
iPhone SDK 3.1.3 with Xcode 3.1.4 – Leopard : http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.1.3__final/iphone_sdk_3.1.3_with_xcode_3.1.4__leopard__9m2809a.dmg
iPhone SDK 3.1.3 with Xcode 3.2.1 – Snow Leopard :  http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.1.3__final/iphone_sdk_3.1.3_with_xcode_3.2.1__snow_leopard__10m2003a.dmg
iPhone SDK 3.2 Beta 4 with Xcode 3.2.2 – Snow Leopard : http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.2_beta_4/iphone_sdk_3.2_beta_4_with_xcode_3.2.2.dmg
iPhone SDK 3.2 FInal with Xcode 3.2.2 – Snow Leopard :  http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.2__final/xcode_3.2.2_and_iphone_sdk_3.2_final.dmg
iPhone SDK 3.1.3 with XCode 3.1.4 for Leopard (10.5.7) http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.1.3__final/iphone_sdk_3.1.3_with_xcode_3.1.4__leopard__9m2809a.dmg
iPhone SDK 3.1.3 with XCode 3.2.1 for Snow Leopard (10.6.0)  http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.1.3__final/iphone_sdk_3.1.3_with_xcode_3.2.1__snow_leopard__10m2003a.dmg
iPhone SDK 3.2 Final with Xcode 3.2.2 for Snow Leopard (10.6.0)  http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_3.2__final/xcode_3.2.2_and_iphone_sdk_3.2_final.dmg
Xcode 3.2.3 and iPhone SDK 4 GM seed for Snow Leopard (10.6.2) http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_4_gm_seed/xcode_3.2.3_and_iphone_sdk_4_gm_seed.dmg
iPhone SDK 4 and Xcode
3.2.3   Final for Snow Leopard (10.6.2)  http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_4__final/xcode_3.2.3_and_iphone_sdk_4__final.dmg
Xcode 3.2.3 and iOS SDK 4.0.1 for Snow Leopard (10.6.4) http://developer.apple.com/ios/download.action?path=/ios/ios_sdk_4.0.1__final/xcode_3.2.3_and_ios_sdk_4.0.1.dmg
Xcode 3.2.3 and iOS SDK 4.0.2 for Snow Leopard (10.6.4) http://developer.apple.com/ios/download.action?path=/ios/ios_sdk_4.0.2__final/xcode_3.2.3_and_ios_sdk_4.0.2.dmg
iOS SDK 4.1 and Xcode
3.2.4   for Snow Leopard
(10.6.4)  http://developer.apple.com/ios/download.action?path=/ios/ios_sdk_4.1__final/xcode_3.2.4_and_ios_sdk_4.1.dmg
Xcode 3.2.5 and iOS SDK 4.2 GM for Snow Leopard (10.6.4) https://developer.apple.com/ios/download.action?path=/ios/ios_sdk_4.2_gm_seed/xcode_3.2.5_and_ios_sdk_4.2_gm_seed.dmg
iOS SDK 4.2 and Xcode
3.2.5  for Snow Leopard
(10.6.4)  http://developer.apple.com/ios/download.action?path=/ios/ios_sdk_4.2__final/xcode_3.2.5_and_ios_sdk_4.2_final.dmg