Resolving SystemVersion.plist Mismatch
This error occurs when a macOS update is staged but not fully installed, causing a conflict with the Root Patch system.
The Safe Mode Solution:
- Boot to Safe Mode: Restart your Mac, hold the Shift key during the OpenCore boot picker until you see the login screen.
- Purge Staged Updates: Log in. macOS often clears temporary update assets in Safe Mode automatically.
- Check Assets: Navigate to
/System/Library/AssetsV2/com_apple_MobileAsset_MacSoftwareUpdateand ensure it is cleared. - Apply Patches: Open OCLP while still in Safe Mode and attempt to install the Post-Install Root Patches.
- Reboot: Restart normally to verify the fix.
Original Question: "To anyone experiencing SystemVersion.plist mismatch error"
I got the error today on my mac after I recently updating from 15.0.1 which I had been running for a long time, to 15.7.7, and my root patches were broken because of the macOS 26 update sitting staged in my system ready to restart and install, and apparently there was no supported way to fix it, only workarounds.
I know everyone’s system is different, but I’m just putting out here what worked for me. I had the update files in /System/Library/AssetsV2/com_apple_MobileAsset_MacSoftwareUpdate taking up 6.5GBs of space.
I simply just had to boot into safe mode by pressing the Option key on boot, selecting EFI Boot, then pressing Shift+Enter on the macOS volume. Once I was booted in to Safe mode and logged in, those files disappeared by themselves miraculously and I attempted a root patch install which worked successfully and encountered no version error. Then I rebooted my system normally after the root patches installed and it all worked perfectly fine with the update being purged.
Again, I know everyone’s systems are different, but this worked for my MacBook Pro Mid-2012 2.5GHz Intel i5 Dual-Core Processor
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