How can I run the iOS 7.1 Simulator in Xcode 7.0 beta 2?

Asked 25/6, 2015 at 17:12 Answered 16/10, 2015 at 6:37

Solved ios iphone xcode ios7.1 xcode7-beta2

I have installed latest Xcode 7 beta 2 version, when I am trying to run the application in iOS 7.1 Simulator its giving this error message:

The iOS 7.1 simulator runtime is not available.

Unable to open liblaunch_sim.dylib. Try reinstalling Xcode or the simulator runtime.

Could you please let me know how to resolve this error?

Ultima answered 25/6, 2015 at 17:12 Comment(0)

You can't (At least in an Official way).

Taken from Xcode Beta 2 Documentation (Page 7).

Hope it helps.

EDIT SEPT - 2015:

Thanks Cœur for the info, now you can use previous versions of ios simulator.

Distributee answered 25/6, 2015 at 17:16 Comment(3)

Further to this: I've tried to find any sort of official or semi-official statement on whether this is likely to be the case after beta. I've failed. – Unparliamentary 25/6, 2015 at 17:22

Link is dead. iOS 8.1 to 8.4 Simulators are supported. Spelling mistake at 'Docummentation'. – Galicia 14/9, 2015 at 1:18

Not sure if this would still be relevant but iOS 7 simulator was working fine on the XCode 7.0 (final). After upgrade to 7.1 I get the same exact error msg as OP. – Gratulant 2/11, 2015 at 2:14

Took a lot of browsing but I finally found a solution that worked for me (tried Gend's answer but didn't work). Execute the following lines:

sudo mv "/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 7.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/host/liblaunch_sim.dylib"{,.bak}

sudo ln -sf "/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/system/host/liblaunch_sim.dylib" "/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 7.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/host/liblaunch_sim.dylib"

Source: https://gist.github.com/leecade/83b4e710d7c741152527

Calbert answered 6/8, 2015 at 8:48 Comment(13)

In XCode 7 beta 6 I don't see this error, but I can't launch app because it stuck in loading state. – Cutback 3/9, 2015 at 15:38

One of my computers has no "/Library/Developer/", the other has an empty "/Library/Developer/CoreSimulator/Profiles/Runtimes/" folder. – Galicia 12/9, 2015 at 7:36

I don't have a CoreSimulator folder in /Library/Developer. – Telespectroscope 16/9, 2015 at 23:10

I got this to work under Xcode 7.0 release too, just had to change "Xcode-beta.app" into "Xcode.app". – Hype 21/9, 2015 at 23:38

The IPC protocol used by the iOS 7.1 and iOS 8+ liblaunch_sim.dylib are not the same. You will run into issues doing this. – Onfre 6/10, 2015 at 23:10

@mike have u managed to launch an app on ios7 sim in xcode 7? – Combings 22/10, 2015 at 14:17

@JeremyHuddlestonSequoia do you have an alternative suggestion to this? Where do we find the iOS 8+ liblaunch_sim.dylib? – Bathsheba 23/10, 2015 at 11:7

@Combings yes, it worked in Xcode 7 beta 1, afterwards iOS7 simulator disappeared. So for now there is no way to test it but on a device. – Burro 5/11, 2015 at 10:34

Couldn't run 7.1 simulator on XCode 7.1 official with same error. I updated the commands to

sudo mv "/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 7.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/host/liblaunch_sim.dylib"{,.bak}

...then

sudo ln -sf "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/system/host/liblaunch_sim.dylib" "/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 7.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/host/liblaunch_sim.dylib"

. Runs, but no output log – Pollywog 16/11, 2015 at 13:40

7.1 simulator appears in xcode 7.1.1 and xcode is able to install apps, but they have to be run manually. debugging not working either – Combings 22/11, 2015 at 20:53

unable to boot simulator – Implicative 8/1, 2016 at 10:24

@Prcela try to close all and the run it or even a restart, I had problems at first as well, so I tried many combination and finally it worked. – Pathoneurosis 8/1, 2016 at 16:17

For Xcode 7.2.1 it ends up with "unable to boot simulator" alert. As before, I can't run iOS 7 simulator, but now alert message is different. – Royo 17/2, 2016 at 12:52

You can't (At least in an Official way).

Taken from Xcode Beta 2 Documentation (Page 7).

Hope it helps.

EDIT SEPT - 2015:

Thanks Cœur for the info, now you can use previous versions of ios simulator.

Distributee answered 25/6, 2015 at 17:16 Comment(3)

Further to this: I've tried to find any sort of official or semi-official statement on whether this is likely to be the case after beta. I've failed. – Unparliamentary 25/6, 2015 at 17:22

Link is dead. iOS 8.1 to 8.4 Simulators are supported. Spelling mistake at 'Docummentation'. – Galicia 14/9, 2015 at 1:18

Not sure if this would still be relevant but iOS 7 simulator was working fine on the XCode 7.0 (final). After upgrade to 7.1 I get the same exact error msg as OP. – Gratulant 2/11, 2015 at 2:14

First, find the target file:

/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/system/host/liblaunch_sim.dylib

You need make backup liblaunch_sim.dylib (Just in case). Second, copied to destination (Remember to backup)

/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 7.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/host/liblaunch_sim.dylib

And If need it to: iOS 8.1.simruntime iOS 8.2.simruntime iOS 8.3.simruntime All done.

Hope it helps.

Diatomic answered 30/6, 2015 at 18:58 Comment(4)

I can't find the CoreSimulator folder under /Library/Developer. Why is that? – Telespectroscope 16/9, 2015 at 23:12

@Telespectroscope I find CorseSimulator but Profiles doesn't appear, just "Devices". Tell me if you find it ! And I will tell you if I find :) – Gervais 16/9, 2015 at 23:46

@Viny76 I ended up placing the liblaunc_sim.dylib after getting the iOS 7.1 simulator SDK from my old xcode located: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk/usr/lib/system/host/liblaunch_sim.dylib now it works – Telespectroscope 17/9, 2015 at 16:13

Now I get "Unable to boot the Simulator." – Twana 28/10, 2015 at 8:34

When you are using sudo command and terminal says: "Command not found" Then use command like below.

sudo su (enter)

$ sudo mv "/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/host/liblaunch_sim.dylib"{,.bak}(enter)

$ sudo mv "/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 7.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/host/liblaunch_sim.dylib"{,.bak}(enter)

$ sudo ln -sf "/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/system/host/liblaunch_sim.dylib" "/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/host/liblaunch_sim.dylib"(enter)

$ sudo ln -sf "/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/system/host/liblaunch_sim.dylib" "/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 7.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/host/liblaunch_sim.dylib"(enter) Exit(enter)

Now relaunch Xcode 7 if open earlier.you will be able to run simulators.

Majesty answered 16/10, 2015 at 6:37 Comment(1)

when I try the above, for 7.1, I get mv: rename /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 7.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/host/liblaunch_sim.dylib to /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 7.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/host/liblaunch_sim.dylib.bak: No such file or directory – Recombination 29/8, 2016 at 17:40

In Xcode 7 beta 6 this seems to be possible now.

http://adcdownload.apple.com/Developer_Tools/Xcode_7_beta_6/Xcode_7_beta_6_Release_Notes.pdf

Xcode 7.0 beta now supports downloadable legacy simulators. (20699475)

I haven't found a place to download these yet though. I will update when/if I find them.

Tum answered 2/9, 2015 at 9:23 Comment(2)

Any update? I'd love to know where to download these! – Toxic 21/9, 2015 at 22:55

The only thing I've found so far is Gend's answer above and pulling them out of the previous Xcode. Per this thread forums.developer.apple.com/thread/17108 it looks like there isn't going to be an official way to do this. – Tum 23/9, 2015 at 8:39

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