I erased my macOS Monterey 12.5.1 And now I have the old version macOS High Sierra 10.13.6
How I get back my macOS Monterey 12.5.1?
iMac (2017 – 2020)
Click > Monterey.
Once downloaded, double-click the “Install macOS…” app in the Applications folder to begin the upgrade.
Please see > How to download macOS.
Thank you much for your answer. I tried to updated but I get this error. Checking "(null)"
At what point does that error appear?
Were you able to download the upgrade application?
As soon as I click Agree.
Thank you
No I didn’t. I got the error as soon as I click agree.
Thank you again
As soon as I click Agree. Never start the download.
The download usually works well with the Safari browser.
If Safari isn't working properly, I suggest you try downloading with the Firefox browser, or maybe Brave browser.
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