Hello, I just purchased a brand new MacBook 12-inch 2017 base model. Right now it's running 10.13.4 and will not show an update in the App Store for 10.13.6. It will also not find any update when I try the "sudo softwaresupdate -ia" command. Thirdly, I tried to download the update via Apple support page but upon attempting install it says that it cannot be installed on the HD. Any clue why this is happening? I updated to 12.8 iTunes upon initially launching the App Store to find the OS update. Surely that's not the problem?
I've attached an image of what happens when I try to install the download from the Apple support page.
I've attached an image of what happens when I try to install the download from the Apple support page.
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