Can't install iOS 26.0 beta through xcodes or xcodebuild

Developer Tools & Services General
ericzhy0815 OP
Created Jun ’25
Replies 4
Boosts 1
Views 230
Participants 3

I need to automate updating to latest iOS betas as part of my ci script, but I can't get it to install iOS 26.0 beta for the life of me, using xcodes or xcodebuild.

I can see the version listed using xcodes runtimes --include-betas, and I tried sudo xcodes runtimes install "iOS 26.0-beta1", but I would get the error

Downloading Runtime iOS 26.0-beta1: 0%
Error: ProcessExecutionError()\

I also tried xcodebuild -downloadPlatform iOS -buildVersion 23A5260l, where I found the specific build id on apples dev images website. But I would get the error

iOS 23A5260l is not available for download. Specific version download failed, trying downloadPlatform ios latest...

And similar error for trying xcodebuild -downloadPlatform iOS -buildVersion 26.0 or other version ids I found online. But this command would work for any other versions and betas listed on the website.

I was able to install iOS 26.0 through xcodebuild -downloadPlatform iOS, which automatically installed it for me, but this is unideal for my situation, as I want to control which betas to install instead of just the latest one (like iOS 18.6 beta that just came out).

Is anyone else also struggling with these errors?

xcodes version 1.6.2 Xcode version 26.0 Beta (installed and selected through xcode)

Replies  4
Boosts  1
Views  230
Participants  3
nicschmidt OP
3w

Hi, were you able to solve the problem? I need to install iOS version 26.0 (23A339), but I'm getting the same message as you:

xcodebuild -downloadPlatform iOS -buildVersion 23A343

Finding content... iOS 23A343 is not available for download.

0
DTS Engineer OP
Apple
3w

From Downloading and installing additional Xcode components > Download Xcode components from the command line:

To download Simulator runtimes for a specific platform, use this syntax:

xcodebuild -downloadPlatform <iOS|watchOS|tvOS|visionOS>  [-exportPath <destinationpath> -buildVersion <osversion> -architectureVariant <universal|arm64>]

To specify an OS version, add the -buildVersion option:

xcodebuild -downloadPlatform iOS -exportPath ~/Downloads -buildVersion 18.0

xcodebuild -downloadPlatform iOS -buildVersion 23A343 Finding content... iOS 23A343 is not available for download.

First, select Xcode 26 in the command line:

sudo xcode-select --switch <path to Xcode 26>

Then, download the iOS 26 Simulator:

xcodebuild -downloadPlatform iOS -exportPath ~/Downloads -buildVersion 26
0
nicschmidt OP
3w

Running the mentioned command, I still get the same error: "iOS 23A339 is not available for download.

ec2-user@ip-XX-XX-XX-XX ~ % xcversion selected

Xcode 26.0

Build version 17A324

ec2-user@ip-XX-XX-XX-XX ~ % xcodebuild -downloadPlatform iOS -exportPath ~/Downloads -buildVersion 23A339

Finding content...

iOS 23A339 is not available for download.

0
DTS Engineer OP
Apple
2w

buildVersion 23A339

The buildVersion option takes the OS version of the platform you want to download. For example, to download the iOS 26 Simulator, run:

xcodebuild -downloadPlatform iOS -exportPath ~/Downloads -buildVersion 26
0
Can't install iOS 26.0 beta through xcodes or xcodebuild
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