Error 10007 installing latest Sequoia guest on Tahoe host

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Created 2d

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Filed a feedback on this: FB23038153

I am unable to install a new Sequoia 15.6.1 (latest available .ipsw) on a Tahoe 26.5.1 host using a Virtualization.framework-based VM app. I’ve tried both Tart and VirtualBuddy. Both get to 90% of the installation, then fail with this error:

Error Domain=VZErrorDomain Code=10007 "Installation failed." UserInfo={NSLocalizedFailure=An error occurred during installation., NSLocalizedFailureReason=Installation failed., NSUnderlyingError=0xc2ac2e280 {Error Domain=com.apple.MobileDevice.MobileRestore Code=-1 "AMRestorePerformRestoreModeRestoreWithError failed with error: 11" UserInfo={NSLocalizedDescription=AMRestorePerformRestoreModeRestoreWithError failed with error: 11, NSLocalizedFailureReason=An unknown error occurred during installation.}}}

I have tried re-installing MobileDevice.pkg from both Xcode 27 beta 1 and Xcode 26.5.0. I’ve rebooted my Mac. I get the same result each time.

I’ve also tried using an older Sequoia restore image (15.4.1), same result. Installing a Tahoe guest works fine.

Answer 1

DTS Engineer OP

Apple

2d

Filed a feedback on this: FB23038153

Thanks.

Our current thinking is that installing Xcode 27 beta installed a version of MobileDevice that broke compatibility with earlier releases. Unfortunately it’s hard to revert that. So I’m not sure what the best path forward is here. I’m going to research this and get back to you, possibly next week after the WWDC dust has settle a bit.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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