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Can't install macOS 26.1

Open ChasBelov opened this issue 2 months ago • 4 comments

When I try to install 26.1.0 I get an error that it's the wrong file type.

Steps:

  1. Launch virtualOS
  2. Click Install (+)
  3. Choose Download latest version

Expected and actual result: macOS 26.1.0 downloads

macOS 26.1.0 (Build 25B78) Downloading 19% (2688 of 17851 MB)

  1. When download is done, click Done
  2. Click Install (+)
  3. In Restore Image dialog, select Restorelmage_1.ipsw

Select Restore Image Restorelmage_1.ipsw Restorelmage.ipsw macOS 26.1.0 (Build 25B78)

  1. Click Install

Expected result: macOS 26.1.0 installs Actual result: Get virtualOS error dialog:

Error The restore image is invalid. The restore image is the wrong file type.

Sorry I can't provide actual screenprints. Github is not letting me upload them.

ChasBelov avatar Nov 13 '25 00:11 ChasBelov

Note: Restorelmage.ipsw is macOS 15.5.0 (Build 24F74) but I don't want to install that one. Eventually, I can't upgrade due to the virtual disk running out of space, even though I allowed 60 GB.

ChasBelov avatar Nov 13 '25 01:11 ChasBelov

Thanks for bringing this issue to my attention. Here's a preview build of the fix, using TestFlight: https://testflight.apple.com/join/vWKNYgmM

yep avatar Nov 13 '25 15:11 yep

Version 2.3.1 is in review and should be available soon, you can also download the binary from GitHub Releases

yep avatar Nov 14 '25 12:11 yep

Thank you. Actually, the TestFlight link is to the 2.2 version. I'll patiently await the post to the App Store.

ChasBelov avatar Nov 16 '25 00:11 ChasBelov