- Refer to [dortania /OpenCore-Install-Guide](https://dortania.github.io/OpenCore-Post-Install/universal/iservices.html)

!!! note
    
    `We’re sorry, but this serial number isn’t valid` is fine and has personally worked and working for me and many others. `Purchase Date not Validated` can be a problem down the line if a legitimate machine with that PlatformInfo is activated.