MacOS reinstall: this item is temporarily unavailable

Hi savannahjyfiel,

Thank you for posting in the Apple Support Communities. It looks like you're having an issue signing in and connecting to the App Store to get the download, correct? If so, we would love to help see if we can get the issue resolved for you. This error indicates that you need to sign in with an Apple ID that has already downloaded or accepted this version of macOS. If your aren't the original owner of the computer, you will need to use the method we've linked below.

How to create a bootable installer for macOS

Please let us know if you have any additional questions. We're always happy to help.

Cheers!

savannahjyfiel Said:

"Hi, I think there is a mistake. [...]when I tried doing the Terminal step, it says command not found."

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Try Another Mac:

Do you have access to another Mac (i.e. friend's, family member's, co-worker's, peer's, etc)? If so, try creating one through use of that. Of course, ask the owner if you may use it to create it.