How to Install Older iOS Simulators in Xcode 4.2.1 (Sdk5.0)

How to Install Older iOS Simulators in XCode 4.2.1 (SDK5.0)

X-Code 4.2 will have iOS 5 simulator and library only. If you want lower version simulator and library with X-Code just goto X-Code->Prefrences-> Downloads Tab. In downloads tab you'll have two tabs:

1) Components - Here you will have option to download iOS 4.3 simulator(~600 Mb), iOS 4.0-4.1(~670 MB) Device debugging support, iOS 3.0-3.2.2(686.3 MB) Device debugging support.

2) Documentation- Yoy will have option to download iOS 5.0,XCode 4.2 Developer libaray,Mac OSX 10.7 Core Library.

Install the components which ever you need and there you go..Have you installed components this way??

Is there a way to install older iOS SDKs in Xcode?

You can't install old 3.1 SDKs on Xcode 4. You can set the Deployment target lower to allow testing on devices running older OS versions than your current SDK installation. The only current way to completely ensure backward compatibility, while running more recent versions of Xcode, is to keep a device that runs iOS 3.x, and test on that device. (...because it is claimed that the old Simulators/tools sometimes actually allows APIs that won't run on an actual device with an OS of the same version).

Other methods include installing the different versions of iOS developer tools in a separate Developer_XYZ directories, and or keeping around a bootable HD with the older iOS developer tool installation (say Snow Leopard with Xcode 3.x, since Lion might only support running Xcode 4.x).

How to install ios4.0 simulator in xcode4.2?

Download
http://developer.apple.com/ios/download.action?path=/iphone/iphone_sdk_4__final/xcode_3.2.3_and_iphone_sdk_4__final.dmg
and install the packages you want on your Developer folder.

Here's step by step on how to do it on Xcode 3.5 but it shouldn't change much from Xcode 4
http://chris-fletcher.com/2010/08/28/howto-install-iphone-sdk-2-0-3-1-for-xcode-3-2/

Is there a way to install older iOS SDKs in Xcode?

You can't install old 3.1 SDKs on Xcode 4. You can set the Deployment target lower to allow testing on devices running older OS versions than your current SDK installation. The only current way to completely ensure backward compatibility, while running more recent versions of Xcode, is to keep a device that runs iOS 3.x, and test on that device. (...because it is claimed that the old Simulators/tools sometimes actually allows APIs that won't run on an actual device with an OS of the same version).

Other methods include installing the different versions of iOS developer tools in a separate Developer_XYZ directories, and or keeping around a bootable HD with the older iOS developer tool installation (say Snow Leopard with Xcode 3.x, since Lion might only support running Xcode 4.x).

Adding the iOS6.1 simulator to Xcode 6

You can install Xcode 5.1 side by side with Xcode 6 to run the iOS 6 simulators. It seems you can't link all the simulators into the same version of Xcode any more.

You can however move apps compiled for one simulator to the other. Just be careful which are i386 and which are 64 bit. See Install iOS 6 simulator on Xcode 6

Is it possible to target older iOS versions when using Xcode 4.2 and iOS 5 SDK?

I was having the same issue trying to get a newly created Xcode 4.2 project running on an iPhone 3G 4.2.1. Here is how I was able to get it to run.

1) Change the Target's "Build Settings" ==> "Architecture" from "Standard (armv7)" to "other". Add armv6 and armv7.

2) Change the Target's "Build Settings" ==> "Valid Architecture" to armv6 and armv7.

3) Change the Target's "Build Settings" ==> "iOS Deployment Target" to iOS 4.2.

4) Open the projects *-Info.plist, remove the setting "Required device capabilities" (note it required armv7)

btw I figured this out when I tried to manually add the app via the organizer and it reported:

Can't install application

The Info.plist for application at /Users/.../TestsDebug.app specifies
device capability requirements, which are not met by Dev iPhone 3G

All should work after that. Talk about a PITA.

Cannot simulate any iOS scheme other than 7.0.3 in Simulator

After searching for solutions for hours I finally found the reason why I cannot select other iOS versions in the Simulator:

It's Mavericks!

In this post in the Apple Developer Forums (Developer account needed to access the forum!) an Apple employee states:

The iOS 5 simulators do not work on OS X 10.9 (Mavericks).

and he says the reason for that is:

The iOS simulator does not duplicate some of the low-level parts of iOS. For example, it uses the host OS X's kernel instead of trying to virtualize the iOS kernel. The iOS simulator requires that these subsystems look sufficiently similar between the simulated iOS and the host OS X. When a new host OS X changes too much it can break old simulators. At that point somebody makes an engineering and cost decision to either update the old simulator or drop support for it.

So if you have installed Mavericks (and do not downgrade if that's even possible) you have no option to run the Simulator with iOS versions < 6.

(If you want to test your app in the Simulator with iOS 6 and 6.1 SDK proceed as the other replies and comments on this page suggest: Go to XCode > Preferences > Downloads and download the corresponding simulator version in the section "Components".)

How to support different iOS SDKs on Xcode 4.2?

Latest SDK included all required features from previous SDK versions. You shouldn't worry about it. If you want to support iPhone 3G just set iOS Deployment Target to iOS 4.2 (or another would you like) in project settings at Build Settings tab.

Don't remember to test your application on that iOS version.

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