If a message like "It may have been corrupted or tampered with during downloading” occurs when trying to install older versions of Mac OS X, it might be that the installer is too old and the certificate has expired.
To fix this, set the date and time the install is being done to some time a few years in the past (about the time the installer would have been current). Set it using the date command from terminal: date {month}{day}{hour}{minute}{year} (example date 010101002015 for 1 am on 1 Jan 2015) then install again.
I usually write a blog post about once a week. The latest post can be viewed here: Avoid Microsoft: If you don't really like computers much you could make things a bit better for yourself. (posted 2024-12-04 at 12:05:50). I do podcasts too!. You can listen to my latest podcast, here: OJB's Podcast 2024-11-18 Unity Through Division: Sometimes hard decisions need to be made to make genuine progress..
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