how to download macos high sierra?

Hi Wai79,

Here is an Apple Support Article about how to install macOS High Sierra on your device.

Apple: How to Upgrade to macOS High Sierra - https://support.apple.com/en-us/HT208969

I hope this helps.

-Percival876

I just went through this! Once downloaded and installed/copied into applications then go to contents and delete the file “installinfo.plist”. This will get rid of the expiration and will no longer show damaged.

Great tip! :)